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TI-2025-39627 Aliases CVE-2025-64184GHSA-4vcx-3pj3-44m7

Dosage vulnerable to Directory Traversal through crafted HTTP responses

Priority MEDIUM 41CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Dosage is a comic strip downloader and archiver. When downloading comic images in versions 3.1 and below, Dosage constructs target file names from different aspects of the remote comic (page URL, image URL, page content, etc.). While the basename is properly stripped of directory-traversing characters, the file extension is taken from the HTTP Content-Type header. This allows a remote attacker (or a Man-in-the-Middle, if the comic is served over HTTP) to write arbitrary files outside the target directory (if additional conditions are met). This issue is fixed in version 3.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00486 42nd percentileScored 2026-11-07
Fix Fixed dosage (webcomics): 3.2dosage (PyPI): 3.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
webcomicsdosagebefore 3.23.2Patch availableCNA
—dosage (PyPI)before 3.23.2Patch availableGHSA-4vcx-3pj3-44m7
  • dosage Vendorwebcomics Affected before 3.2 Fixed in 3.2 Patch available CNA
  • dosage (PyPI) Vendor— Affected before 3.2 Fixed in 3.2 Patch available GHSA-4vcx-3pj3-44m7

Remediation

  • Fix · CNA dosage (webcomics) Fixed in 3.2
  • Fix · GHSA-4vcx-3pj3-44m7 dosage (PyPI) Fixed in 3.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-64184
  2. 2026-10-03 Alias added: GHSA-4vcx-3pj3-44m7

References

Advisory 1

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences