CVE-2026-75899

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-02. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-64763 (ENISA EUVD) · GHSA-fph4-wmhf-6fwf (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
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).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

fast-uri is a URI parser for Node.js. It decodes percent escapes in a hostname during parsing and then decodes the parsed hostname a second time during authority recomposition, so a single call to normalize or resolve can turn nested percent-encoded input into a different network destination such as a loopback hostname or address. For example, a doubly encoded host that spells out a loopback name decodes to that live host in one operation, which contradicts RFC 3986 section 2.4 that an implementation must not decode the same string more than once. An application that normalizes or resolves an untrusted HTTP-family URI before outbound routing, redirect validation, or a host-policy check can receive a destination different from the one the original encoded host represented, giving a server-side request forgery and host-policy bypass primitive. This is an incomplete-fix variant of CVE-2026-6322. The affected versions are 2.4.1 up to but not including 2.4.5, 3.1.2 up to but not including 3.1.6, and 4.0.0 up to but not including 4.1.3. The issue is fixed in 2.4.5, 3.1.6, and 4.1.3, which normalize percent escapes once and preserve encoded percent signs. Users should upgrade to a patched version.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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
0.2%
EPSS %ILE
12th
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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 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 or medium mission impact; Attend at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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)14 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 partial (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

August 24, 2026

Last Modified

October 14, 2026

Advisory Details (2)

Auto-updated Aug 24, 2026
Patch available. Sources: github.
Web page

Security Advisories | OpenJS Foundation CVE Numbering Authority

https://cna.openjsf.org/security-advisories.html
GitHub advisoryMentions a patch (unverified)

fast-uri vulnerable to server-side request forgery via repeated hostname percent-decoding · Advisory · fastify/fast-uri · GitHub

https://github.com/fastify/fast-uri/security/advisories/GHSA-fph4-wmhf-6fwf

Patch Availability(33)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatcluster-observability-operator/distributed-tracing-console-plugin-rhel9:17938249082026-11-05redhat
redhatcluster-observability-operator/distributed-tracing-console-plugin-rhel9:17936619182026-11-04redhat
redhatrhoai/odh-mod-arch-gen-ai-rhel9:17930018962026-10-29redhat
redhatodf4/odf-console-rhel9:17931268292026-10-29redhat
redhatdevspaces/code-rhel9:17925993882026-10-26redhat
redhatrhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9:17918254692026-10-21redhat
redhatrhoai/odh-mod-arch-model-registry-rhel9:17918534322026-10-21redhat
redhatrhoai/odh-mod-arch-model-registry-rhel9:17918609182026-10-19redhat
redhatansible-automation-platform/bootc-automation-portal-rhel9:17918656602026-10-13redhat
redhatcostmanagement/costmanagement-ui-rhel10:17914608512026-10-08redhat
redhatrhdh/rhdh-hub-rhel9:17913114952026-10-08redhat
redhatrhdh/red-hat-developer-hub-backstage-plugin-scaffolder-backend-module-orchestrator:17912496402026-10-06redhat
redhatforeman-0:3.18.0.14-1.el9sat2026-10-01redhat
redhatsatellite/iop-vulnerability-frontend-rhel9:17904836082026-10-01redhat
redhatcluster-observability-operator/troubleshooting-panel-console-plugin-rhel9:17908544942026-10-01redhat
redhatmulticluster-engine/console-mce-rhel9:17901330812026-09-28redhat
redhatrhacm2/console-rhel9:17882836122026-09-28redhat
redhatmulticluster-engine/console-mce-rhel9:17901353232026-09-28redhat
redhatcockpit-image-builder-0:94.4-1.el10_22026-09-24redhat
redhatnetwork-observability/network-observability-console-plugin-rhel9:17899782772026-09-23redhat
redhatansible-automation-platform-tech-preview/mcp-server-rhel9:17896690362026-09-23redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17895678492026-09-22redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17895928062026-09-22redhat
redhatrhdh/rhdh-hub-rhel9:17895542852026-09-21redhat
redhatsatellite/iop-remediations-rhel9:17896150952026-09-17redhat
redhatsatellite/iop-host-inventory-frontend-rhel9:17896131072026-09-17redhat
redhatsatellite/iop-remediations-rhel9:17896155932026-09-17redhat
redhatrhmtc/openshift-migration-ui-rhel8:17895463732026-09-17redhat
redhatsatellite/iop-vulnerability-frontend-rhel9:17896609832026-09-17redhat
redhatsatellite/iop-advisor-frontend-rhel9:17896595652026-09-17redhat
npmfast-uri @ 2.4.5 (fixes >= 2.4.1, < 2.4.5)—ghsa
npmfast-uri @ 3.1.6 (fixes >= 3.1.2, < 3.1.6)—ghsa
npmfast-uri @ 4.1.3 (fixes >= 4.0.0, < 4.1.3)—ghsa

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

(3 across 3 ecosystems)
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-ajv8.12.0~ds+~2.1.1-5 ... 8.20.0~ds+~cs7.1.6-2 (16 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-ajv8.12.0~ds+~2.1.1-5 ... 8.20.0~ds+~cs7.1.3-3 (12 versions)
  • every version up to 8.20.0~ds+~cs7.1.4-1: fixed in 8.20.0~ds+~cs7.1.4-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
fast-uri—
  • 2.4.1 up to 2.4.5: fixed in 2.4.5
  • 3.1.2 up to 3.1.6: fixed in 3.1.6
  • 4.0.0 up to 4.1.3: fixed in 4.1.3
—

Weakness Classification(2)

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

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 37× 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 216 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 116 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-11-11 05:13 UTCEchelonGraph re-scored
  4. 2026-11-11 05:13 UTCVendor advisory
  5. 2026-11-11 05:12 UTCGHSA enrichmentGHSA-fph4-wmhf-6fwf · GitHub severity HIGH · GitHub CVSS 7.5
  6. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  7. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  10. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  13. 2026-11-04 08:40 UTCEchelonGraph re-scored
  14. 2026-11-04 08:40 UTCVendor advisory
  15. 2026-11-04 08:40 UTCGHSA enrichmentGHSA-fph4-wmhf-6fwf · GitHub severity HIGH · GitHub CVSS 7.5
  16. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  18. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  19. 2026-11-01 07:39 UTCEchelonGraph re-scored
  20. 2026-11-01 07:39 UTCGHSA enrichmentGHSA-fph4-wmhf-6fwf · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  22. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-10-28 12:54 UTCEchelonGraph re-scored
Show 75 more
  1. 2026-10-28 12:54 UTCVendor advisory
  2. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  4. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-10-25 14:02 UTCEchelonGraph re-scored
  6. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  7. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  8. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  9. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  10. 2026-10-21 09:18 UTCEchelonGraph re-scored
  11. 2026-10-21 09:18 UTCVendor advisory
  12. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  13. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-10-18 03:13 UTCEchelonGraph re-scored
  15. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  17. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  18. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-10-14 13:33 UTCEchelonGraph re-scored
  20. 2026-10-14 13:33 UTCVendor advisory
  21. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  22. 2026-10-13 07:15 UTCEchelonGraph re-scored
  23. 2026-10-13 07:15 UTCVendor advisory
  24. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  25. 2026-10-12 15:38 UTCEchelonGraph re-scored
  26. 2026-10-11 19:24 UTCEchelonGraph re-scored
  27. 2026-10-11 16:40 UTCEchelonGraph re-scored
  28. 2026-10-11 13:59 UTCEchelonGraph re-scored
  29. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  30. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  31. 2026-10-10 13:13 UTCEchelonGraph re-scored
  32. 2026-10-10 13:13 UTCVendor advisory
  33. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  34. 2026-10-09 05:00 UTCEchelonGraph re-scored
  35. 2026-10-09 05:00 UTCVendor advisory
  36. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  37. 2026-10-08 04:15 UTCEchelonGraph re-scored
  38. 2026-10-08 04:15 UTCVendor advisory
  39. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  40. 2026-10-07 05:03 UTCVendor advisory
  41. 2026-10-06 16:42 UTCEchelonGraph re-scored
  42. 2026-10-06 16:42 UTCVendor advisory
  43. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  44. 2026-10-06 02:56 UTCEchelonGraph re-scored
  45. 2026-10-06 02:56 UTCVendor advisory
  46. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  47. 2026-10-05 09:22 UTCEchelonGraph re-scored
  48. 2026-10-05 09:22 UTCVendor advisory
  49. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  50. 2026-10-04 20:44 UTCVendor advisory
  51. 2026-10-04 05:00 UTCVendor advisory
  52. 2026-10-03 16:33 UTCEchelonGraph re-scored
  53. 2026-10-03 16:33 UTCVendor advisory
  54. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  55. 2026-10-02 21:35 UTCEchelonGraph re-scored
  56. 2026-10-02 21:35 UTCVendor advisory
  57. 2026-10-02 09:21 UTCVendor advisory
  58. 2026-10-01 21:08 UTCEchelonGraph re-scored
  59. 2026-10-01 21:08 UTCVendor advisory
  60. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  61. 2026-10-01 08:35 UTCVendor advisory
  62. 2026-09-30 20:19 UTCEchelonGraph re-scored
  63. 2026-09-30 20:19 UTCVendor advisory
  64. 2026-09-30 07:18 UTCEchelonGraph re-scored
  65. 2026-09-30 07:18 UTCVendor advisory
  66. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  67. 2026-09-29 15:18 UTCVendor advisory
  68. 2026-09-29 01:42 UTCEchelonGraph re-scored
  69. 2026-09-29 01:42 UTCVendor advisory
  70. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  71. 2026-09-28 13:26 UTCVendor advisory
  72. 2026-09-28 01:12 UTCEchelonGraph re-scored
  73. 2026-09-28 01:12 UTCVendor advisory
  74. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  75. 2026-09-27 12:58 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-75899?
CVE-2026-75899 is a high-severity vulnerability; its CVE record was published on August 24, 2026. fast-uri is a URI parser for Node.js. It decodes percent escapes in a hostname during parsing and then decodes the parsed hostname a second time during authority recomposition, so a single call to normalize or resolve can turn nested percent-encoded input into a different network destination such…
When was the CVE record for CVE-2026-75899 published?
The CVE record for CVE-2026-75899 was published on August 24, 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 October 14, 2026; the record at its source may have been updated since.
Is CVE-2026-75899 actively exploited?
CVE-2026-75899 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75899?
CVE-2026-75899 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75899?
A fix for CVE-2026-75899 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75899 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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