CVE-2026-75975

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (11th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — Patch released this week
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. Its custom parser for bracketed IPv6 literals does not validate the complete IPv6 grammar, so invalid trailing text in an authority can be silently discarded and a malformed attacker-controlled host is turned into a different valid IPv6 destination. For example, a bracketed literal with invalid trailing characters is normalized to the unspecified address, which a Node HTTP client then connects to a local service over loopback, and other malformed literals collapse to private-range addresses. No error is set on the parsed result, so an application checking the error field cannot detect the rewrite. An application that normalizes untrusted URLs before outbound requests, redirects, proxy routing, or address-policy enforcement can be redirected to a local or private IPv6 target, giving a server-side request forgery and address-policy bypass primitive. The affected versions are 2.3.1 up to but not including 2.4.5, 3.0.0 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 validate bracketed IP literals against the full grammar and mark malformed literals as authority errors. 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 intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
The EG Score, 7.5 of 10.
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
11th
KEV
Not listed

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.

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

September 2, 2026

Advisory Details (2)

Auto-updated Aug 24, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

fast-uri vulnerable to server-side request forgery via malformed IPv6 normalization · Advisory · fastify/fast-uri · GitHub

https://github.com/fastify/fast-uri/security/advisories/GHSA-f65p-4m7j-42xc
Web page

Security Advisories | OpenJS Foundation CVE Numbering Authority

https://cna.openjsf.org/security-advisories.html

Vendor Advisories for CVE-2026-75975(20)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
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
redhatcluster-observability-operator/troubleshooting-panel-console-plugin-rhel9:17908544942026-10-01redhat
redhatmulticluster-engine/console-mce-rhel9:17901330812026-09-28redhat
redhatmulticluster-engine/console-mce-rhel9:17901353232026-09-28redhat
redhatrhacm2/console-rhel9:17882836122026-09-28redhat
redhatcockpit-image-builder-0:94.4-1.el10_22026-09-24redhat
redhatansible-automation-platform-tech-preview/mcp-server-rhel9:17896690362026-09-23redhat
redhatnetwork-observability/network-observability-console-plugin-rhel9:17899782772026-09-23redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17895928062026-09-22redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17895678492026-09-22redhat
redhatrhdh/rhdh-hub-rhel9:17895542852026-09-21redhat
redhatrhmtc/openshift-migration-ui-rhel8:17895463732026-09-17redhat
redhatsatellite/iop-advisor-frontend-rhel9:17896595732026-09-17redhat
redhatdevspaces/dashboard-rhel9:17891628842026-09-17redhat
redhatsatellite/iop-host-inventory-frontend-rhel9:17896245192026-09-17redhat
redhatsatellite/iop-vulnerability-frontend-rhel9:17896609832026-09-17redhat
redhatsatellite/iop-vulnerability-frontend-rhel9:17896609692026-09-17redhat
redhatsatellite/iop-remediations-rhel9:17896150952026-09-17redhat
redhatsatellite/iop-remediations-rhel9:17896155932026-09-17redhat
redhatsatellite/iop-advisor-frontend-rhel9:17896595652026-09-17redhat
redhatsatellite/iop-host-inventory-frontend-rhel9:17896131072026-09-17redhat
redhatrhem/flightctl-ui-rhel10:17894881112026-09-16redhat
redhatrhem/flightctl-ui-ocp-rhel9:17894864462026-09-16redhat
redhatrhem/flightctl-ui-rhel10:17894861812026-09-16redhat
redhatrhem/flightctl-ui-rhel9:17894867502026-09-16redhat
redhatrhacm2/console-rhel9:17888809802026-09-15redhat
redhatrhacm2/console-rhel9:17888834722026-09-15redhat
redhatansible-automation-platform-27/mcp-server-rhel9:17889157362026-09-14redhat

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+~cs7.1.6-1 (15 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—
  • 2.3.1 up to 2.4.5: fixed in 2.4.5
  • 3.0.0 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.

Additional Vendor Advisories

(17)

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 / 100× 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 it from the CNA feed. 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). Most recent first.

Showing the most recent 100 of 171 refreshes 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 71 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-75975?
CVE-2026-75975 is a high-severity vulnerability; its CVE record was published on August 24, 2026. fast-uri is a URI parser for Node.js. Its custom parser for bracketed IPv6 literals does not validate the complete IPv6 grammar, so invalid trailing text in an authority can be silently discarded and a malformed attacker-controlled host is turned into a different valid IPv6 destination. For…
When was the CVE record for CVE-2026-75975 published?
The CVE record for CVE-2026-75975 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 September 2, 2026; the record at its source may have been updated since.
Is CVE-2026-75975 actively exploited?
CVE-2026-75975 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75975?
CVE-2026-75975 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-2026-75975?
A fix for CVE-2026-75975 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75975 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-2026-75975

Explore →

Is Your Infrastructure Affected by CVE-2026-75975?

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

Book a Demo →Browse All CVEs