CVE-2025-67720

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 v3.1

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

CVSS v3.1

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

EPSS

0.31% chance of exploitation in the next 30 days, 23th percentile

Published

2025-12-11

Proof-of-concept exploits (1)

• advisories/GHSA-6h2f-wjhf-4wjx

References

• CVE Record
• NVD entry

Related

• CVE-2025-6772
• CVE-2025-67729
• CVE-2025-67712
• CVE-2025-67730
• CVE-2025-6769
• CVE-2025-67733