CVE-2026-55428

8.2 HIGH
Published: July 08, 2026 Modified: July 08, 2026
View on NVD

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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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/coder/coder/pull/26144
Source: security-advisories@github.com
https://github.com/coder/coder/releases/tag/v2.29.17
Source: security-advisories@github.com
https://github.com/coder/coder/releases/tag/v2.32.7
Source: security-advisories@github.com
https://github.com/coder/coder/releases/tag/v2.33.8
Source: security-advisories@github.com
https://github.com/coder/coder/releases/tag/v2.34.2
Source: security-advisories@github.com

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.2 / 10.0
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)