CVE-2025-67720

Pyrofork has a Path Traversal in download_media Method

CVSS 6.5 MEDIUMEPSS 0.3%CWE-22

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

11 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

Mayuri-Chan · pyrofork

References

https://github.com/Mayuri-Chan/pyrofork/commit/2f2d515575cc9c360bd74340a61a1d2b1e1f1f95 https://github.com/Mayuri-Chan/pyrofork/security/advisories/GHSA-6h2f-wjhf-4wjx