CVE-2026-9079

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Elevated

Also known asEUVD-2026-41510 (ENISA EUVD) · GHSA-f4cv-xm48-3694 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 9.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

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)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
1.1%
EPSS %ILE
65th
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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
1.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-11). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days 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, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (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)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). 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

July 3, 2026

Last Modified

September 15, 2026

Advisory Details (3)

Auto-updated Nov 8, 2026
Patch available.
Web page

curl - stale proxy password leak - CVE-2026-9079

https://curl.se/docs/CVE-2026-9079.html

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibcurl4-openssl-dev (7.35.0-1ubuntu2.20+esm20) @ trusty2026-11-03ubuntu
redhatcostmanagement/costmanagement-ui-rhel10:17914608512026-10-08redhat
redhatcurl-0:8.12.1-1.el10_0.102026-09-28redhat
redhatcurl-0:8.12.1-4.el10_2.62026-09-21redhat
redhatlibcurl-1.dll2026-08-19redhat
redhatrust-main-1.96.1-1.hum12026-07-02redhat
redhatcurl-main-8.21.0-0.1.hum12026-06-24redhat

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

(4 across 4 ecosystems)
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
curl—
  • 8.8.0 up to 8.22.0-r0: fixed in 8.22.0-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
curl—
  • 8.8.0 up to 8.21.0-r0: fixed in 8.21.0-r0
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
curl8.14.1-2 ... 8.23.0~rc2-1+exp1 (84 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
curl8.14.1-2 ... 8.21.0~rc1-1+exp1 (59 versions)
  • every version up to 8.21.0~rc2-1: fixed in 8.21.0~rc2-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 19× in last 7d / 84× 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 719 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 619 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:35 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  2. 2026-11-12 11:31 UTCEchelonGraph re-scored
  3. 2026-11-12 11:31 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-11 16:41 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  5. 2026-11-11 10:54 UTCEchelonGraph re-scored
  6. 2026-11-11 10:54 UTCVendor advisory
  7. 2026-11-11 10:54 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-11-10 16:46 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  9. 2026-11-10 10:17 UTCEchelonGraph re-scored
  10. 2026-11-10 10:17 UTCVendor advisory
  11. 2026-11-10 10:17 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-11-09 16:37 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  13. 2026-11-09 09:38 UTCEchelonGraph re-scored
  14. 2026-11-09 09:38 UTCVendor advisory
  15. 2026-11-09 09:38 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-11-08 16:42 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  17. 2026-11-08 09:01 UTCEchelonGraph re-scored
  18. 2026-11-08 09:01 UTCVendor advisory
  19. 2026-11-08 09:01 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-11-07 16:40 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  21. 2026-11-07 08:23 UTCEchelonGraph re-scored
  22. 2026-11-07 08:23 UTCVendor advisory
  23. 2026-11-07 08:23 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-11-06 21:55 UTCOSV refresh
  25. 2026-11-06 16:40 UTCEPSS rescoreEPSS 1.1% · 64th percentile
Show 75 more
  1. 2026-11-06 07:46 UTCEchelonGraph re-scored
  2. 2026-11-06 07:46 UTCVendor advisory
  3. 2026-11-06 07:46 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-05 16:39 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  5. 2026-11-05 07:09 UTCEchelonGraph re-scored
  6. 2026-11-05 07:09 UTCVendor advisory
  7. 2026-11-05 07:09 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-11-04 16:37 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  9. 2026-11-04 06:29 UTCEchelonGraph re-scored
  10. 2026-11-04 06:29 UTCVendor advisory
  11. 2026-11-04 06:29 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-11-03 16:49 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  13. 2026-11-03 05:51 UTCEchelonGraph re-scored
  14. 2026-11-03 05:51 UTCVendor advisory
  15. 2026-11-03 05:51 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-11-02 16:46 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  17. 2026-11-02 05:14 UTCEchelonGraph re-scored
  18. 2026-11-02 05:14 UTCVendor advisory
  19. 2026-11-02 05:14 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-11-01 04:36 UTCEchelonGraph re-scored
  21. 2026-11-01 04:36 UTCVendor advisory
  22. 2026-11-01 04:36 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-10-31 16:33 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  24. 2026-10-31 03:58 UTCEchelonGraph re-scored
  25. 2026-10-31 03:58 UTCVendor advisory
  26. 2026-10-31 03:58 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  27. 2026-10-30 16:35 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  28. 2026-10-30 03:21 UTCEchelonGraph re-scored
  29. 2026-10-30 03:21 UTCVendor advisory
  30. 2026-10-30 03:21 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  31. 2026-10-29 16:34 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  32. 2026-10-29 02:44 UTCEchelonGraph re-scored
  33. 2026-10-29 02:44 UTCVendor advisory
  34. 2026-10-29 02:44 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  35. 2026-10-28 16:33 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  36. 2026-10-28 02:02 UTCEchelonGraph re-scored
  37. 2026-10-28 02:02 UTCVendor advisory
  38. 2026-10-28 02:02 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  39. 2026-10-27 16:33 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  40. 2026-10-27 01:20 UTCEchelonGraph re-scored
  41. 2026-10-27 01:20 UTCVendor advisory
  42. 2026-10-27 01:19 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  43. 2026-10-26 16:33 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  44. 2026-10-25 20:50 UTCEchelonGraph re-scored
  45. 2026-10-25 20:50 UTCVendor advisory
  46. 2026-10-25 20:50 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  47. 2026-10-25 16:34 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  48. 2026-10-25 13:51 UTCEchelonGraph re-scored
  49. 2026-10-24 20:13 UTCEchelonGraph re-scored
  50. 2026-10-24 20:13 UTCVendor advisory
  51. 2026-10-24 20:13 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  52. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  53. 2026-10-23 19:36 UTCEchelonGraph re-scored
  54. 2026-10-23 19:36 UTCVendor advisory
  55. 2026-10-23 19:36 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  56. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  57. 2026-10-22 18:51 UTCEchelonGraph re-scored
  58. 2026-10-22 18:51 UTCVendor advisory
  59. 2026-10-22 18:51 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  60. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  61. 2026-10-21 18:13 UTCEchelonGraph re-scored
  62. 2026-10-21 18:13 UTCVendor advisory
  63. 2026-10-21 18:12 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  64. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  65. 2026-10-20 17:35 UTCEchelonGraph re-scored
  66. 2026-10-20 17:35 UTCVendor advisory
  67. 2026-10-20 17:35 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  68. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  69. 2026-10-19 16:51 UTCEchelonGraph re-scored
  70. 2026-10-19 16:51 UTCVendor advisory
  71. 2026-10-19 16:51 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  72. 2026-10-19 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  73. 2026-10-18 16:14 UTCVendor advisory
  74. 2026-10-18 16:14 UTCGHSA enrichmentGHSA-f4cv-xm48-3694 · GitHub severity CRITICAL · GitHub CVSS 9.8
  75. 2026-10-18 03:00 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-9079?
CVE-2026-9079 is a critical-severity vulnerability; its CVE record was published on July 3, 2026. libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.
When was the CVE record for CVE-2026-9079 published?
The CVE record for CVE-2026-9079 was published on July 3, 2026. 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 September 15, 2026; the record at its source may have been updated since.
Is CVE-2026-9079 actively exploited?
CVE-2026-9079 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (65th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-9079?
CVE-2026-9079 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-9079?
A fix for CVE-2026-9079 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-9079 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-9079

Explore →

Is Your Infrastructure Affected by CVE-2026-9079?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.