Higress before 2.2.4 Rate Limit Bypass via Malformed Cookie Header (CVE-2026-92790) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-92790

Higress before 2.2.4 Rate Limit Bypass via Malformed Cookie Header

Answer in brief

CVE-2026-92790 records a Unknown severity vulnerability in Higress before 2.2.4 Rate Limit Bypass via Malformed Cookie Header. The current sources do not mark it as known exploited. The current feed maps higress-group/higress (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps higress-group/higress (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
higress-group/higressgeneric	>=0 <2.2.4	2.2.4

Recommended response

Check inventory. Check lockfiles and deployed manifests for higress-group/higress.
Review the reported fix. Update higress-group/higress to 2.2.4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.