CVE-2026-118687
Coder before 2.29.21, 2.34.12, 2.35.9, 2.36.7, and 2.37.4 Missing Audience Validation in GCP Instance-Identity Authentication
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-441 |
| Vendor | coder |
| Product | coder |
| Published | Oct 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
coder / coder
2.37.0 < 2.37.4
coder / coder
2.36.0 < 2.36.7
coder / coder
2.35.0 < 2.35.9
coder / coder
2.30.0 < 2.34.12
coder / coder
0 < 2.29.21
References
Credits
🔍 matte1782