CVE-2025-52477

Published: Jun 26, 2025Modified: Jun 26, 2025

8.6

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Exploitability: 3.9 / Impact: 4.0

Source: security-advisories@github.com (Secondary)

Description

Octo-STS is a GitHub App that acts like a Security Token Service (STS) for the GitHub API. Octo-STS versions before v0.5.3 are vulnerable to unauthenticated SSRF by abusing fields in OpenID Connect tokens. Malicious tokens were shown to trigger internal network requests which could reflect error logs with sensitive information. Upgrade to v0.5.3 to resolve this issue. This version includes patch sets to sanitize input and redact logging.

Related CWEs

CWE-918

Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

References (4)

https://github.com/octo-sts/app/commit/0f177fde54f9318e33f0bba6abaea9463a7c3afd

Source: security-advisories@github.com

https://github.com/octo-sts/app/commit/b3976e39bd8c8c217c0670747d34a4499043da92

Source: security-advisories@github.com

https://github.com/octo-sts/app/security/advisories/GHSA-h3qp-hwvr-9xcq

Source: security-advisories@github.com

https://github.com/octo-sts/app/security/advisories/GHSA-h3qp-hwvr-9xcq

Source: security-advisories@github.com

Timeline

No history available yet.