MEDIUM 6.9 NVD
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 t
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.
References
- https://github.com/higress-group/higress
- https://github.com/higress-group/higress/blob/v2.2.3/plugins/wasm-go/extensions/ai-token-r
- https://github.com/higress-group/higress/blob/v2.2.4/plugins/wasm-go/extensions/ai-token-r
- https://github.com/higress-group/higress/issues/4599
- https://www.vulncheck.com/advisories/higress-before-2.2.4-rate-limit-bypass-via-malformed-
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-09-16 via NVD.
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