CVE-2026-55432

Description

Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, the `CreateSubAgent` RPC did not validate a requested app sharing level against the template's `MaxPortSharingLevel` before persisting workspace apps, letting a workspace owner exceed the administrator's configured maximum. Exploitation requires the ability to register sub-agent apps in a workspace the attacker controls. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2clamps the sub-agent app sharing level to the template's `MaxPortSharingLevel`. As a workaround, disable wildcard app hostnames (`CODER_WILDCARD_ACCESS_URL`) to block subdomain-based app routing.

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Produits concernés

• coder
• Coder coder

Scores CVSS

Faiblesses (CWE)

• CWE-862

Références

• https://github.com/coder/coder/pull/26061 Issue TrackingPatch
• https://github.com/coder/coder/releases/tag/v2.29.17 Release Notes
• https://github.com/coder/coder/releases/tag/v2.32.7 Release Notes
• https://github.com/coder/coder/releases/tag/v2.33.8 Release Notes
• https://github.com/coder/coder/releases/tag/v2.34.2 Release Notes
• https://github.com/coder/coder/security/advisories/GHSA-x9qq-2qh5-8rxf PatchVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories