CVE-2026-85692

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

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

Nightingale (n9e), as of commit 8362cbe (main branch, confirmed 2026-08-27), contains a server-side request forgery vulnerability in the isPublicIP function in aiagent/tools/http.go, the SSRF guard for the http_fetch AI-agent tool. The function only unwraps standard IPv4-mapped (::ffff:a.b.c.d) IPv6 addresses before checking them against the forbidden-range list, and does not classify 6to4 (2002::/16), NAT64 (64:ff9b::/96, 64:ff9b:1::/48), or deprecated site-local (fec0::/10) addresses. On a dual-stack or NAT64-enabled host, an attacker able to supply a URL to the http_fetch tool can bypass the guard by encoding a forbidden IPv4 address (such as the cloud instance-metadata endpoint 169.254.169.254) in one of these IPv6 forms to reach internal or metadata services.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 10, 2026

Advisory Details (4)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

Nightingale 9.1.1 SSRF Guard Bypass via IPv6 Encoding | Advisories | VulnCheck

https://www.vulncheck.com/advisories/nightingale-9.1.1-ssrf-guard-bypass-via-ipv6-encoding
generic

nightingale/aiagent/tools/http.go at v9.1.1 · ccfos/nightingale · GitHub

https://github.com/ccfos/nightingale/blob/v9.1.1/aiagent/tools/http.go
generic

GitHub - ccfos/nightingale: Nightingale is to monitoring and alerting what Grafana is to visualization. · GitHub

https://github.com/ccfos/nightingale
generic

SSRF guard bypass in http_fetch: isPublicIP misses 6to4/NAT64/site-local IPv6 encodings of forbidden addresses · Issue #3363 · ccfos/nightingale · GitHub

https://github.com/ccfos/nightingale/issues/3363

Vendor Advisories for CVE-2026-85692(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 20× in last 7d / 49× 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. 2026-09-21 05:07 UTCEG score recompute
  2. 2026-09-21 05:07 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 03:46 UTCEG score recompute
  5. 2026-09-20 03:46 UTCGHSA enrichment
  6. 2026-09-19 02:29 UTCEG score recompute
  7. 2026-09-19 02:29 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-18 01:10 UTCEG score recompute
  10. 2026-09-18 01:10 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-16 23:53 UTCEG score recompute
  13. 2026-09-16 23:53 UTCGHSA enrichment
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 22:36 UTCEG score recompute
  17. 2026-09-15 22:36 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 21:19 UTCGHSA enrichment
  21. 2026-09-13 20:00 UTCEG score recompute
  22. 2026-09-13 20:00 UTCGHSA enrichment
  23. 2026-09-12 18:43 UTCEG score recompute
  24. 2026-09-12 18:43 UTCGHSA enrichment
  25. 2026-09-11 17:26 UTCEG score recompute
Show 24 more
  1. 2026-09-11 17:26 UTCGHSA enrichment
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-10 15:59 UTCEG score recompute
  5. 2026-09-10 15:59 UTCGHSA enrichment
  6. 2026-09-10 01:38 UTCGHSA enrichment
  7. 2026-09-09 00:22 UTCEG score recompute
  8. 2026-09-09 00:22 UTCGHSA enrichment
  9. 2026-09-08 22:01 UTCEPSS rescore
  10. 2026-09-07 22:31 UTCEG score recompute
  11. 2026-09-07 22:31 UTCGHSA enrichment
  12. 2026-09-06 21:14 UTCEG score recompute
  13. 2026-09-06 21:14 UTCGHSA enrichment
  14. 2026-09-06 13:48 UTCEPSS rescore
  15. 2026-09-05 19:57 UTCEG score recompute
  16. 2026-09-05 19:56 UTCGHSA enrichment
  17. 2026-09-05 15:31 UTCEPSS rescore
  18. 2026-09-04 18:40 UTCEG score recompute
  19. 2026-09-04 18:40 UTCGHSA enrichment
  20. 2026-09-04 17:52 UTCEG score recompute
  21. 2026-09-04 17:52 UTCGHSA enrichment
  22. 2026-09-04 15:22 UTCEG score recompute
  23. 2026-09-04 14:45 UTCEG score recompute
  24. 2026-09-04 14:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85692?
CVE-2026-85692 is a medium vulnerability published on September 4, 2026. Nightingale (n9e), as of commit 8362cbe (main branch, confirmed 2026-08-27), contains a server-side request forgery vulnerability in the isPublicIP function in aiagent/tools/http.go, the SSRF guard for the httpfetch AI-agent tool. The function only unwraps standard IPv4-mapped (::ffff:a.b.c.d) IPv6…
When was CVE-2026-85692 disclosed?
CVE-2026-85692 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85692 actively exploited?
CVE-2026-85692 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 75.1% of all scored CVEs.
What is the CVSS score of CVE-2026-85692?
CVE-2026-85692 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-85692?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85692, 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

Explore the affected products and dependency analysis for CVE-2026-85692

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