Coder up to 2.38.0 AI Gateway path traversal

Summaryinfo

A vulnerability was found in Coder up to 2.38.0 and classified as critical. This affects an unknown function of the component AI Gateway. Such manipulation leads to path traversal. This vulnerability is referenced as CVE-2026-121967. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Coder up to 2.38.0. Affected by this issue is an unknown code of the component AI Gateway. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Coder 2.28.0 before 2.29.22, 2.30.0 before 2.34.13, 2.35.0 before 2.35.10, 2.36.0 before 2.36.8, 2.37.0 before 2.37.5, and 2.38.0 before 2.38.1 contains a path traversal vulnerability in the AI Gateway passthrough router, which forwards percent-encoded dot segments upstream without rejecting them. Authenticated users can send paths such as %2e%2e or ..%2F under allowlisted prefixes to reach unintended provider endpoints using the deployment's centrally managed provider key.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-121967 since 11/04/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 2.29.22, 2.34.13, 2.35.10, 2.36.8, 2.37.5 or 2.38.1 eliminates this vulnerability.

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Productinfo

Name

• Coder

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.29.0
• 2.29.1
• 2.29.2
• 2.29.3
• 2.29.4
• 2.29.5
• 2.29.6
• 2.29.7
• 2.29.8
• 2.29.9
• 2.29.10
• 2.29.11
• 2.29.12
• 2.29.13
• 2.29.14
• 2.29.15
• 2.29.16
• 2.29.17
• 2.29.18
• 2.29.19
• 2.29.20
• 2.29.21
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.34.0
• 2.34.1
• 2.34.2
• 2.34.3
• 2.34.4
• 2.34.5
• 2.34.6
• 2.34.7
• 2.34.8
• 2.34.9
• 2.34.10
• 2.34.11
• 2.34.12
• 2.35
• 2.35.0
• 2.35.1
• 2.35.2
• 2.35.3
• 2.35.4
• 2.35.5
• 2.35.6
• 2.35.7
• 2.35.8
• 2.35.9
• 2.36
• 2.36.0
• 2.36.1
• 2.36.2
• 2.36.3
• 2.36.4
• 2.36.5
• 2.36.6
• 2.36.7
• 2.37
• 2.37.0
• 2.37.1
• 2.37.2
• 2.37.3
• 2.37.4
• 2.38.0

Website

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

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