CVE-2026-79665

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-25. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Ech0 before 4.5.1 contains an authorization bypass vulnerability where session tokens skip scope validation in RequireScopes middleware, allowing logged-in non-admin users to access admin endpoints. Attackers can read system logs, visitor statistics, user emails, and subscribe to live WebSocket logs by sending authenticated session tokens to unprotected endpoints.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
56(Track*)
EG Risk 56/100SSVC: Track*

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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 25, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Ech0 before 4.5.1 Authorization Bypass via Session Tokens | Advisories | VulnCheck

https://www.vulncheck.com/advisories/ech0-before-authorization-bypass-via-session-tokens
github Patch Available🟡 PoC Available

Authorization bypass on admin endpoints and /ws/system/logs — session tokens skip RequireScopes · Advisory · lin-snow/Ech0 · GitHub

https://github.com/lin-snow/Ech0/security/advisories/GHSA-hmmq-qh6g-6wgh

Vendor Advisories for CVE-2026-79665(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 24× in last 7d / 24× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 22:47 UTCGHSA enrichment
  3. 2026-08-29 11:34 UTCGHSA enrichment
  4. 2026-08-29 00:17 UTCEG score recompute
  5. 2026-08-29 00:17 UTCGHSA enrichment
  6. 2026-08-28 21:42 UTCEPSS rescore
  7. 2026-08-28 11:58 UTCGHSA enrichment
  8. 2026-08-28 00:44 UTCEG score recompute
  9. 2026-08-28 00:44 UTCGHSA enrichment
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-27 13:18 UTCGHSA enrichment
  12. 2026-08-27 02:05 UTCGHSA enrichment
  13. 2026-08-26 14:52 UTCEG score recompute
  14. 2026-08-26 14:52 UTCGHSA enrichment
  15. 2026-08-26 14:47 UTCEPSS rescore
  16. 2026-08-26 03:38 UTCEG score recompute
  17. 2026-08-26 03:38 UTCGHSA enrichment
  18. 2026-08-25 16:24 UTCEG score recompute
  19. 2026-08-25 16:24 UTCGHSA enrichment
  20. 2026-08-25 15:50 UTCEG score recompute
  21. 2026-08-25 15:50 UTCGHSA enrichment
  22. 2026-08-25 12:18 UTCEG score recompute
  23. 2026-08-25 11:42 UTCEG score recompute
  24. 2026-08-25 11:41 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-79665?
CVE-2026-79665 is a high vulnerability published on August 25, 2026. Ech0 before 4.5.1 contains an authorization bypass vulnerability where session tokens skip scope validation in RequireScopes middleware, allowing logged-in non-admin users to access admin endpoints. Attackers can read system logs, visitor statistics, user emails, and subscribe to live WebSocket…
When was CVE-2026-79665 disclosed?
CVE-2026-79665 was first published in the National Vulnerability Database on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79665 actively exploited?
CVE-2026-79665 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 72.1% of all scored CVEs.
What is the CVSS score of CVE-2026-79665?
CVE-2026-79665 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-79665?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79665, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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