CVE-2025-67720

Published: Dec 11, 2025Modified: Jun 17, 2026Deferred

6.5

Vector

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

Exploitability: 2.8 / Impact: 3.6

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

Description

Pyrofork is a modern, asynchronous MTProto API framework. Versions 2.3.68 and earlier do not properly sanitize filenames received from Telegram messages in the download_media method before using them in file path construction. When downloading media, if the user does not specify a custom filename (which is the common/default usage), the method falls back to using the file_name attribute from the media object. The attribute originates from Telegram's DocumentAttributeFilename and is controlled by the message sender. This issue is fixed in version 2.3.69.

Related CWEs

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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.

References (2)

https://github.com/Mayuri-Chan/pyrofork/commit/2f2d515575cc9c360bd74340a61a1d2b1e1f1f95

Source: security-advisories@github.com

https://github.com/Mayuri-Chan/pyrofork/security/advisories/GHSA-6h2f-wjhf-4wjx

Source: security-advisories@github.com

Timeline

No history available yet.