CVE-2026-82042

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-02. The CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

UTMStack before 11.2.16 contains an authentication bypass vulnerability that allows remote attackers to gain full administrative API access by presenting a valid Utm-Internal-Key header matching the INTERNAL_KEY environment variable value, which the InternalApiKeyFilter accepts for any endpoint without path restriction, constant-time comparison, rate limiting, or audit logging. Attackers who obtain the key value can authenticate without a user account or JWT to create accounts, manage users, exfiltrate data, and modify security rules.

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
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
0.5%
EPSS %ILE
43rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or 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 (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 2, 2026

Last Modified

October 4, 2026

Advisory Details (3)

Auto-updated Oct 4, 2026
Patch available. Sources: github_release, github_commit.
generic

UTMStack < 11.2.16 Authentication Bypass via InternalApiKeyFilter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/utmstack-authentication-bypass-via-internalapikeyfilter
github_commit Patch Available

commit 4e7a727c3b8d (utmstack/UTMStack)

Patch available: utmstack/UTMStack v11.2.14 (contains commit 4e7a727c3b8d)

https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd
github_release Patch Available

v11.2.16

Patch available: UTMStack/UTMStack v11.2.16

https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16

Vendor Advisories for CVE-2026-82042(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-10-05 06:45 UTCGHSA enrichment
  2. 2026-10-05 03:03 UTCEG score recompute
  3. 2026-10-05 03:03 UTCGHSA enrichment
  4. 2026-10-04 23:22 UTCEPSS rescore
  5. 2026-10-04 23:20 UTCGHSA enrichment
  6. 2026-10-04 19:39 UTCGHSA enrichment
  7. 2026-10-04 15:58 UTCEG score recompute
  8. 2026-10-04 15:58 UTCGHSA enrichment
  9. 2026-10-04 13:57 UTCGHSA enrichment
  10. 2026-10-04 10:16 UTCGHSA enrichment
  11. 2026-10-04 06:34 UTCGHSA enrichment
  12. 2026-10-04 02:53 UTCGHSA enrichment
  13. 2026-10-03 23:13 UTCGHSA enrichment
  14. 2026-10-03 19:31 UTCGHSA enrichment
  15. 2026-10-03 15:51 UTCEG score recompute
  16. 2026-10-03 15:51 UTCGHSA enrichment
  17. 2026-10-03 14:26 UTCEPSS rescore
  18. 2026-10-03 12:10 UTCGHSA enrichment
  19. 2026-10-03 08:28 UTCGHSA enrichment
  20. 2026-10-03 04:44 UTCGHSA enrichment
  21. 2026-10-03 01:03 UTCEG score recompute
  22. 2026-10-03 01:03 UTCGHSA enrichment
  23. 2026-10-02 21:22 UTCEG score recompute
  24. 2026-10-02 20:28 UTCEG score recompute
  25. 2026-10-02 20:25 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82042?
CVE-2026-82042 is a critical vulnerability published on October 2, 2026. UTMStack before 11.2.16 contains an authentication bypass vulnerability that allows remote attackers to gain full administrative API access by presenting a valid Utm-Internal-Key header matching the INTERNAL_KEY environment variable value, which the InternalApiKeyFilter accepts for any endpoint…
When was CVE-2026-82042 disclosed?
CVE-2026-82042 was first published on October 2, 2026, with the most recent update on October 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82042 actively exploited?
CVE-2026-82042 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-82042?
CVE-2026-82042 has a CVSS base score of 9.8 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-82042?
A fix for CVE-2026-82042 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-82042 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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