CVE-2025-67720 MEDIUM

CVE-2025-67720: Pyrofork has a Path Traversal in download_media Method

Vendor Mayuri-Chan
Product pyrofork
Weakness CWE-22 · Path traversal
Published December 11, 2025
Last update December 11, 2025
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 11, 2025 CVE published
December 11, 2025 Record updated