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VulnerabilityPublished

CVE-2025-64184: webcomics dosage · Path Traversal

Affects webcomics dosageSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High : upgrade to 3.2 soon.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade webcomics/dosage to 3.2.

Affected software

ProductAffectedFixed in
GitHubwebcomics/dosagepkg:github/webcomics/dosageOther threatsAffected
  • <3.2
Fixed in
  • 3.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should immediately upgrade Dosage to version 3.2 or later, where this vulnerability is fixed. If upgrading is not immediately feasible, users should avoid downloading comics over unencrypted HTTP connections to prevent man-in-the-middle exploitation. Network defenses should be enhanced to detect and block suspicious HTTP traffic that attempts to manipulate Content-Type headers. Implement strict egress and ingress filtering to limit exposure to untrusted networks. Additionally, running Dosage with least privilege file system permissions can reduce the impact of arbitrary file writes. Monitoring file system changes in directories used by Dosage can help detect exploitation attempts. Organizations should also educate users about the risks of downloading content from untrusted sources and encourage the use of secure protocols (HTTPS). Regular vulnerability scanning and patch management processes should be enforced to prevent similar issues.

Description

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.

References

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