CVE-2026-55435: Suspended Coder users retain access to AI Bridge LLM proxy endpoints

July 6, 2026

AI Bridge proxy endpoints authenticate via Server.IsAuthorized in coderd/aibridgedserver, which validates key format, expiry, secret and deleted or system users but does not check whether the account is suspended. Because suspension does not revoke existing API keys, a suspended user’s unexpired token keeps working.

Note: Practical impact is limited to already-issued API keys of suspended users until those keys are deleted.

References

github.com/advisories/GHSA-wqxv-w64v-5wh6
github.com/coder/coder/pull/26164
github.com/coder/coder/security/advisories/GHSA-wqxv-w64v-5wh6
nvd.nist.gov/vuln/detail/CVE-2026-55435

Code Behaviors & Features

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