CVE-2026-92790

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-09-16. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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.

Higress before 2.2.4 panics when processing a Cookie header segment without an equals sign, causing the plugin wrapper to recover and return a continue action that bypasses AI token rate limiting. Unauthenticated attackers can craft a malformed Cookie header to skip rate limit checks and exceed thresholds intended to restrict costly model backend calls.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
60(Attend)
EG Risk 60/100SSVC: Attend

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%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

September 16, 2026

Last Modified

September 17, 2026

Advisory Details (5)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

Higress before 2.2.4 Rate Limit Bypass via Malformed Cookie Header | Advisories | VulnCheck

https://www.vulncheck.com/advisories/higress-before-2.2.4-rate-limit-bypass-via-malformed-cookie-header
generic

higress/plugins/wasm-go/extensions/ai-token-ratelimit/util/utils.go at v2.2.4 · higress-group/higress · GitHub

https://github.com/higress-group/higress/blob/v2.2.4/plugins/wasm-go/extensions/ai-token-ratelimit/util/utils.go#L52-L63
generic

higress/plugins/wasm-go/extensions/ai-token-ratelimit/util/utils.go at v2.2.3 · higress-group/higress · GitHub

https://github.com/higress-group/higress/blob/v2.2.3/plugins/wasm-go/extensions/ai-token-ratelimit/util/utils.go#L52-L63
generic

GitHub - higress-group/higress: 🤖 AI Gateway | AI Native API Gateway · GitHub

https://github.com/higress-group/higress
generic

ai-token-ratelimit and frontend-gray Wasm plugins panic on malformed Cookie header and fail open, bypassing AI token rate limiting and gray-release routing · Issue #4599 · higress-group/higress · GitHub

https://github.com/higress-group/higress/issues/4599

Vendor Advisories for CVE-2026-92790(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 11× in last 7d / 11× 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. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 17:52 UTCEG score recompute
  3. 2026-09-18 17:52 UTCGHSA enrichment
  4. 2026-09-17 19:32 UTCEPSS rescore
  5. 2026-09-17 17:59 UTCEG score recompute
  6. 2026-09-17 17:59 UTCGHSA enrichment
  7. 2026-09-17 15:25 UTCEG score recompute
  8. 2026-09-17 15:25 UTCGHSA enrichment
  9. 2026-09-16 21:23 UTCEG score recompute
  10. 2026-09-16 20:37 UTCEG score recompute
  11. 2026-09-16 20:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-92790?
CVE-2026-92790 is a medium vulnerability published on September 16, 2026. Higress before 2.2.4 panics when processing a Cookie header segment without an equals sign, causing the plugin wrapper to recover and return a continue action that bypasses AI token rate limiting. Unauthenticated attackers can craft a malformed Cookie header to skip rate limit checks and exceed…
When was CVE-2026-92790 disclosed?
CVE-2026-92790 was first published in the National Vulnerability Database on September 16, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-92790 actively exploited?
CVE-2026-92790 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 68.2% of all scored CVEs.
What is the CVSS score of CVE-2026-92790?
CVE-2026-92790 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-92790?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-92790, 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-2026-92790

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