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CVE-2026-92790

Higress before 2.2.4 Rate Limit Bypass via Malformed Cookie Header

CVSS 4.0 6.9 MEDIUMCVSS 3.1 6.5 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-92790

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-92790

Published

higress

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "higress-group",
                    "product": "higress",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:golang/github.com/alibaba/higress/v2",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "2.2.4",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON