What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-11 · updated 2026-10-08
• Weakness: CWE-22

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.

Affected products

• Mayuri-Chan pyrofork: before 2.3.69

References

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

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