Wei-Shaw Sub2API up to 0.1.168 Routes path traversal

Summaryinfo

A vulnerability has been found in Wei-Shaw Sub2API up to 0.1.168 and classified as critical. Impacted is an unknown function of the component Routes. This manipulation causes path traversal. This vulnerability is registered as CVE-2026-73079. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Wei-Shaw Sub2API up to 0.1.168. It has been declared as critical. Affected by this vulnerability is an unknown part of the component Routes. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Sub2API is an AI API gateway platform designed to distribute and manage API quotas from AI product subscriptions. From 0.1.135, to 0.1.168, platform API keys issued to tenants are exchanged for upstream requests made with shared provider accounts (ChatGPT/Codex OAuth, OpenAI platform keys, or an operator-configured base URL) that belong to the operator, not to the caller. The `POST /responses/*subpath` wildcard routes spliced the client-supplied subpath into the upstream URL with no validation. This lets an authenticated tenant relay requests to arbitrary upstream endpoints using pooled account credentials via a path traversal. This vulnerability is fixed in 0.1.169.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-73079 since 08/10/2026. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 0.1.169 eliminates this vulnerability.

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Productinfo

Vendor

• Wei-Shaw

Name

• Sub2API

Version

• 0.1.168

Website

• Product: https://github.com/Wei-Shaw/sub2api/

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