CVE-2026-118687
Coder before 2.29.21, 2.30.0 before 2.34.12, 2.35.0 before 2.35.9, 2.36.0 before 2.36.7, and 2.37.0 before 2.37.4 does not validate the audience claim of GCE instance-identity JWTs at the POST /api/v2/workspaceagents/google-instance-identity endpoint. Attackers who obtain an unexpired format=full identity token minted for another relying party can replay it to obtain that workspace agent's session token, which remains valid until the workspace's next build.
- Score
- CVSS 4.0 8.3 High
- Status
- Received - disclosure@vulncheck.com
- Published
- 2026-10-28
- Last modified
- 2026-10-28
- Weaknesses
- CWE-441
Affected products
References
- https://github.com/coder/coder/security/advisories/GHSA-24vh-q7rg-243w
- https://www.vulncheck.com/advisories/coder-before-2.29.21-2.34.12-2.35.9-2.36.7-and-2.37.4-missing-audience-validation-…
