Vulnerability · Published Sep 6, 2025 · Assigned by GitHub_M
CVE-2025-58437Coder's privilege escalation vulnerability could lead to a cross workspace compromise
High 8.1
In plain English
A high-severity security flaw in coder from coder. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/coder/coder | no fix listed | GO-2025-3938 |
| Go | github.com/coder/coder/v2 | 2.24.4 | GHSA-j6xf-jwrj-v5qp |
| Go | github.com/coder/coder/v2 | 2.25.2 | GHSA-j6xf-jwrj-v5qp |
| Go | github.com/coder/coder/v2 | 2.24.4, 2.25.2 | GO-2025-3938 |
Affected products (as reported)
Weakness: CWE-613, CWE-279, CWE-277 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- https://github.com/coder/coder/security/advisories/GHSA-j6xf-jwrj-v5qp x_refsource_CONFIRM
- https://github.com/coder/coder/pull/19667 x_refsource_MISC
- https://github.com/coder/coder/pull/19668 x_refsource_MISC
- https://github.com/coder/coder/pull/19669 x_refsource_MISC
- https://github.com/coder/coder/commit/06cbb2890f453cd522bb2158a6549afa3419c276 x_refsource_MISC
- https://github.com/coder/coder/commit/20d67d7d7191a4fd5d36a61c6fc1e23ab59befc0 x_refsource_MISC
- https://github.com/coder/coder/commit/ec660907faa0b0eae20fa2ba58ce1733f5f4b35a x_refsource_MISC