Coder allows organizations to provision remote development environments via Terraform. In versions 2.22.0 through 2.24.3, 2.25.0 and 2.25.1, Coder can be compromised through insecure session handling in prebuilt workspaces. Coder automatically generates a session token for a user when a workspace is started. It is automatically exposed via coder_workspace_owner.session_token. Prebuilt workspaces are initially owned by a built-in prebuilds system user. When a prebuilt workspace is claimed, a new session token is generated for the user that claimed the workspace, but the previous session token for the prebuilds user was not expired. Any Coder workspace templates that persist this automatically generated session token are potentially impacted. This is fixed in versions 2.24.4 and 2.25.2.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://github.com/coder/coder/commit/06cbb2890f453cd522bb2158a6549afa3419c276 Patch
- https://github.com/coder/coder/commit/20d67d7d7191a4fd5d36a61c6fc1e23ab59befc0 Patch
- https://github.com/coder/coder/commit/ec660907faa0b0eae20fa2ba58ce1733f5f4b35a Patch
- https://github.com/coder/coder/security/advisories/GHSA-j6xf-jwrj-v5qp Exploit, Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.1 · coderNVD modified 2026-10-19 17:10
Affected (CPE criteria) 1
cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*
References 7
- https://github.com/coder/coder/commit/06cbb2890f453cd522bb2158a6549afa3419c276 Patch
- https://github.com/coder/coder/commit/20d67d7d7191a4fd5d36a61c6fc1e23ab59befc0 Patch
- https://github.com/coder/coder/commit/ec660907faa0b0eae20fa2ba58ce1733f5f4b35a Patch
- https://github.com/coder/coder/pull/19667 Issue Tracking
- https://github.com/coder/coder/pull/19668 Issue Tracking
- https://github.com/coder/coder/pull/19669 Issue Tracking
- https://github.com/coder/coder/security/advisories/GHSA-j6xf-jwrj-v5qp Exploit, Mitigation, Vendor Advisory