CVE-2026-92790

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 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/higress-group/higress
https://github.com/higress-group/higress/blob/v2.2.3/plugins/wasm-go/extensions/ai-token-ratelimit/util/utils.go#L52-L63
https://github.com/higress-group/higress/blob/v2.2.4/plugins/wasm-go/extensions/ai-token-ratelimit/util/utils.go#L52-L63
https://github.com/higress-group/higress/issues/4599
https://www.vulncheck.com/advisories/higress-before-2.2.4-rate-limit-bypass-via-malformed-cookie-header
https://github.com/higress-group/higress/issues/4599

Configurations

No configuration.

History

17 Sep 2026, 16:18

Type	Values Removed	Values Added
References	~~() https://github.com/higress-group/higress/issues/4599 -~~	() https://github.com/higress-group/higress/issues/4599 -

16 Sep 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-16 21:17

Updated : 2026-09-17 16:18

NVD link : CVE-2026-92790

Mitre link : CVE-2026-92790

CVE.ORG link : CVE-2026-92790

JSON object : View

Products Affected

No product.

CWE

CWE-703

Improper Check or Handling of Exceptional Conditions

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