CVE-2019-9515

CRITICALNVD 7.59.0
EchelonGraph scoreHIGH confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score elevated to 9.0 because EPSS predicted 87% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs) when EchelonGraph scored this CVE. NVD baseline CVSS 7.5 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction (continuous uplift above 30%)
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated

Also known asEUVD-2019-18887 (ENISA EUVD) · GHSA-9259-5376-vjcj (GitHub Security Advisories)Source: ENISA EUVD

9.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High exploitation likelihood — EPSS 87%
CISA-KEV: Not listedEPSS PROB: 87%CVSS: 7.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

CVSS v3
7.5
EG Score
9.0CRITICALhigh confidence
EG Risk
69
EG Risk 69/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation87% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
87%
EPSS %ILE
99th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.0): severity, escalated by confirmed exploitation. This CVE's 9.0 is EPSS's lift toward 9.0 from its impact severity (EG Severity, CVSS 7.5 HIGH): a likelihood of exploitation, not impact.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
87% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 13, 2019

Last Modified

January 14, 2025

Advisory Details (8)

Auto-updated Oct 14, 2026
Patch available. Sources: redhat.
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2019:3892
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2019:2955
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2019:2939
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2019:2925
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2019:2861
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2019:2796
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2019:2766
Web page

Full Disclosure: APPLE-SA-2019-08-13-5 SwiftNIO HTTP/2 1.5.0

http://seclists.org/fulldisclosure/2019/Aug/16

Patch Availability(21)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntutwisted-doc (16.0.0-1ubuntu0.4) @ xenial2026-11-11ubuntu
ubuntulibnetty-java (1:4.1.7-4ubuntu0.1+esm1) @ bionic2026-11-11ubuntu
redhateap7-wildfly-elytron-0:1.1.13-1.Final_redhat_00001.1.ep7.el72024-08-26redhat
redhatnetty2020-07-29redhat
redhatundertow2020-06-15redhat
redhatpatch2020-05-18redhat
redhatpatch2020-04-14redhat
redhatpatch2020-03-23redhat
redhatrh-sso7-keycloak-0:4.8.15-1.Final_redhat_00001.1.el6sso2019-12-02redhat
redhatrh-sso7-keycloak-0:4.8.15-1.Final_redhat_00001.1.el8sso2019-12-02redhat
redhatrh-sso7-keycloak-0:4.8.15-1.Final_redhat_00001.1.el7sso2019-12-02redhat
redhateap7-yasson-0:1.0.5-1.redhat_00001.1.el6eap2019-11-26redhat
redhateap7-yasson-0:1.0.5-1.redhat_00001.1.el7eap2019-11-26redhat
redhatundertow-core2019-11-26redhat
redhateap7-yasson-0:1.0.5-1.redhat_00001.1.el8eap2019-11-26redhat
redhatrh-nodejs8-nodejs-0:8.16.1-2.el72019-10-02redhat
redhatrh-nodejs10-nodejs-0:10.16.3-3.el72019-10-01redhat
redhatnodejs:10-8000020190911085529.f8e95b4e2019-09-30redhat
redhatopenshift4/ose-sriov-network-device-plugin:v4.1.18-2019092019152019-09-26redhat
redhatskydive-0:0.20.5-2.el7ost2019-09-19redhat
redhatopenshift4/ose-operator-registry:v4.1.15-2019090416052019-09-12redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(50 across 19 ecosystems)
Alpine:v3.11(4)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
h2o—
  • every version up to 2.2.6-r0: fixed in 2.2.6-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
py3-twisted—
  • every version up to 19.10.0-r0: fixed in 19.10.0-r0
—
Alpine:v3.15(4)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
h2o—
  • every version up to 2.2.6-r0: fixed in 2.2.6-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
py3-twisted—
  • every version up to 19.10.0-r0: fixed in 19.10.0-r0
—
Alpine:v3.12(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
h2o—
  • every version up to 2.2.6-r0: fixed in 2.2.6-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
Alpine:v3.13(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
h2o—
  • every version up to 2.2.6-r0: fixed in 2.2.6-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
Alpine:v3.14(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
h2o—
  • every version up to 2.2.6-r0: fixed in 2.2.6-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
Alpine:v3.16(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
h2o—
  • every version up to 2.2.6-r0: fixed in 2.2.6-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
Alpine:v3.17(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
h2o—
  • every version up to 2.2.6-r0: fixed in 2.2.6-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
Alpine:v3.18(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
h2o—
  • every version up to 2.2.6-r0: fixed in 2.2.6-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
Alpine:v3.19(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
h2o—
  • every version up to 2.2.6-r0: fixed in 2.2.6-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
Alpine:v3.20(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
py3-twisted—
  • every version up to 19.10.0-r0: fixed in 19.10.0-r0
—
Alpine:v3.21(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
py3-twisted—
  • every version up to 19.10.0-r0: fixed in 19.10.0-r0
—
Alpine:v3.22(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
py3-twisted—
  • every version up to 19.10.0-r0: fixed in 19.10.0-r0
—
Alpine:v3.23(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
py3-twisted—
  • every version up to 19.10.0-r0: fixed in 19.10.0-r0
—
Alpine:v3.24(3)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
py3-twisted—
  • every version up to 19.10.0-r0: fixed in 19.10.0-r0
—
Alpine:v3.10(2)
PackageVulnerable rangeFix by version rangeDependents
containerd—
  • every version up to 1.2.9-r0: fixed in 1.2.9-r0
—
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
Alpine:v3.9(1)
PackageVulnerable rangeFix by version rangeDependents
nodejs—
  • every version up to 10.16.3-r0: fixed in 10.16.3-r0
—
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
h2o2.2.5+dfsg2-2
  • every version up to 2.2.5+dfsg2-2+deb10u1: fixed in 2.2.5+dfsg2-2+deb10u1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
h2o—
  • every version up to 2.2.5+dfsg2-3: fixed in 2.2.5+dfsg2-3
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
h2o—
  • every version up to 2.2.5+dfsg2-3: fixed in 2.2.5+dfsg2-3
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(5)

Data Freshness Timeline

(refreshed 14× in last 7d / 64× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 191 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 91 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 23:40 UTCEchelonGraph re-scored
  2. 2026-11-12 23:40 UTCVendor advisory
  3. 2026-11-12 23:40 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-11-11 21:18 UTCEchelonGraph re-scored
  5. 2026-11-11 21:18 UTCVendor advisory
  6. 2026-11-11 21:18 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  7. 2026-11-11 16:30 UTCEPSS rescoreEPSS 87% · 99th percentile
  8. 2026-11-10 18:56 UTCEchelonGraph re-scored
  9. 2026-11-10 18:56 UTCVendor advisory
  10. 2026-11-10 18:56 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  11. 2026-11-09 16:34 UTCEchelonGraph re-scored
  12. 2026-11-09 16:34 UTCVendor advisory
  13. 2026-11-09 16:34 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  14. 2026-11-09 16:28 UTCEPSS rescoreEPSS 87% · 99th percentile
  15. 2026-11-08 14:12 UTCEchelonGraph re-scored
  16. 2026-11-08 14:12 UTCVendor advisory
  17. 2026-11-08 14:12 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  18. 2026-11-07 11:48 UTCEchelonGraph re-scored
  19. 2026-11-07 11:48 UTCVendor advisory
  20. 2026-11-07 11:48 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-11-06 09:26 UTCEchelonGraph re-scored
  22. 2026-11-06 09:26 UTCVendor advisory
  23. 2026-11-06 09:26 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  24. 2026-11-05 07:04 UTCEchelonGraph re-scored
  25. 2026-11-05 07:04 UTCVendor advisory
Show 75 more
  1. 2026-11-05 07:04 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  2. 2026-11-04 16:29 UTCEPSS rescoreEPSS 87% · 99th percentile
  3. 2026-11-04 04:41 UTCEchelonGraph re-scored
  4. 2026-11-04 04:41 UTCVendor advisory
  5. 2026-11-04 04:41 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  6. 2026-11-03 07:25 UTCOSV refresh
  7. 2026-11-03 02:19 UTCEchelonGraph re-scored
  8. 2026-11-03 02:19 UTCVendor advisory
  9. 2026-11-03 02:18 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  10. 2026-11-01 23:56 UTCEchelonGraph re-scored
  11. 2026-11-01 23:56 UTCVendor advisory
  12. 2026-11-01 23:56 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  13. 2026-10-31 21:34 UTCEchelonGraph re-scored
  14. 2026-10-31 21:34 UTCVendor advisory
  15. 2026-10-31 21:34 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  16. 2026-10-30 19:12 UTCEchelonGraph re-scored
  17. 2026-10-30 19:12 UTCVendor advisory
  18. 2026-10-30 19:12 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  19. 2026-10-29 16:50 UTCEchelonGraph re-scored
  20. 2026-10-29 16:50 UTCVendor advisory
  21. 2026-10-29 16:50 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  22. 2026-10-29 16:28 UTCEPSS rescoreEPSS 87% · 99th percentile
  23. 2026-10-28 14:25 UTCEchelonGraph re-scored
  24. 2026-10-28 14:25 UTCVendor advisory
  25. 2026-10-28 14:25 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  26. 2026-10-27 16:27 UTCEPSS rescoreEPSS 87% · 99th percentile
  27. 2026-10-27 11:43 UTCEchelonGraph re-scored
  28. 2026-10-27 11:43 UTCVendor advisory
  29. 2026-10-27 11:43 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  30. 2026-10-26 09:22 UTCVendor advisory
  31. 2026-10-26 09:21 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  32. 2026-10-25 18:55 UTCEchelonGraph re-scored
  33. 2026-10-25 16:27 UTCEPSS rescoreEPSS 87% · 99th percentile
  34. 2026-10-25 07:00 UTCEchelonGraph re-scored
  35. 2026-10-25 07:00 UTCVendor advisory
  36. 2026-10-25 07:00 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  37. 2026-10-24 04:37 UTCEchelonGraph re-scored
  38. 2026-10-24 04:37 UTCVendor advisory
  39. 2026-10-24 04:37 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  40. 2026-10-23 02:15 UTCEchelonGraph re-scored
  41. 2026-10-23 02:15 UTCVendor advisory
  42. 2026-10-23 02:15 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  43. 2026-10-21 23:52 UTCEchelonGraph re-scored
  44. 2026-10-21 23:52 UTCVendor advisory
  45. 2026-10-21 23:52 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  46. 2026-10-21 16:27 UTCEPSS rescoreEPSS 87% · 99th percentile
  47. 2026-10-20 21:31 UTCEchelonGraph re-scored
  48. 2026-10-20 21:31 UTCVendor advisory
  49. 2026-10-20 21:31 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  50. 2026-10-19 19:09 UTCEchelonGraph re-scored
  51. 2026-10-19 19:09 UTCVendor advisory
  52. 2026-10-19 19:08 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  53. 2026-10-19 16:27 UTCEPSS rescoreEPSS 87% · 99th percentile
  54. 2026-10-18 16:46 UTCEchelonGraph re-scored
  55. 2026-10-18 16:46 UTCVendor advisory
  56. 2026-10-18 16:46 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  57. 2026-10-18 09:40 UTCEchelonGraph re-scored
  58. 2026-10-17 14:22 UTCEchelonGraph re-scored
  59. 2026-10-17 14:22 UTCVendor advisory
  60. 2026-10-17 14:22 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  61. 2026-10-16 12:00 UTCEchelonGraph re-scored
  62. 2026-10-16 12:00 UTCVendor advisory
  63. 2026-10-16 12:00 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  64. 2026-10-15 09:38 UTCEchelonGraph re-scored
  65. 2026-10-15 09:38 UTCVendor advisory
  66. 2026-10-15 09:38 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  67. 2026-10-14 16:28 UTCEPSS rescoreEPSS 87% · 99th percentile
  68. 2026-10-14 05:51 UTCEchelonGraph re-scored
  69. 2026-10-14 05:51 UTCVendor advisory
  70. 2026-10-14 05:51 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  71. 2026-10-13 01:05 UTCVendor advisory
  72. 2026-10-13 01:05 UTCGHSA enrichmentGHSA-9259-5376-vjcj · GitHub severity HIGH · GitHub CVSS 7.5
  73. 2026-10-12 19:50 UTCEchelonGraph re-scored
  74. 2026-10-12 00:14 UTCEchelonGraph re-scored
  75. 2026-10-09 20:03 UTCEPSS rescoreEPSS 87% · 99th percentile

Frequently asked(5)

What is CVE-2019-9515?
CVE-2019-9515 is a critical-severity vulnerability; its CVE record was published on August 13, 2019. Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost…
When was the CVE record for CVE-2019-9515 published?
The CVE record for CVE-2019-9515 was published on August 13, 2019. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of January 14, 2025; the record at its source may have been updated since.
Is CVE-2019-9515 actively exploited?
CVE-2019-9515 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2019-9515?
CVE-2019-9515 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
How do I remediate CVE-2019-9515?
A fix for CVE-2019-9515 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2019-9515 are linked in the Vendor Advisories panel on this page.

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