CVE-2026-55428

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 tailnet coordinator validates that an agent's `Addresses` derive from its authenticated UUID but applies no equivalent check to `AllowedIPs`. The coordinator forwards agent-supplied `AllowedIPs` verbatim to tunnel peers which install them into the WireGuard peer configuration. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 validates each `AllowedIPs` prefix against the authenticating agent's UUID just like `Addresses`. As a workaround, monitor coordinator logs for agents advertising unexpected `AllowedIPs` prefixes.

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Produits concernés

• coder
• Coder coder

Scores CVSS

Faiblesses (CWE)

• CWE-285
• CWE-863

Références

• https://github.com/coder/coder/pull/26144 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-wrq8-fcv5-8hvp PatchVendor Advisory

Ailleurs

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