Coder up to 2.24.3/2.25.1 session expiration

Summaryinfo

A vulnerability, which was classified as critical, has been found in Coder up to 2.24.3/2.25.1. The impacted element is an unknown function. The manipulation leads to session expiration. This vulnerability is uniquely identified as CVE-2025-58437. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Coder up to 2.24.3/2.25.1. This issue affects an unknown functionality. The manipulation with an unknown input leads to a session expiration vulnerability. Using CWE to declare the problem leads to CWE-613. According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization." Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-58437 since 09/01/2025. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.24.4 or 2.25.2 eliminates this vulnerability. Applying the patch 06cbb2890f453cd522bb2158a6549afa3419c276 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-27069). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• Coder

Version

• 2.24.0
• 2.24.1
• 2.24.2
• 2.24.3
• 2.25.0
• 2.25.1

License

• open-source

Website

• Product: https://github.com/coder/coder/

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Be aware that VulDB is the high quality source for vulnerability data.

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