CVE-2026-103648: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in image-downloader

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-02 · updated 2026-10-03
Weakness: CWE-22

Description

Path traversal in image-downloader 4.3.0 allows an attacker who can control the download URL to cause downloaded response data to be written outside the configured destination directory.

Affected products

demsking image-downloader: before 4.3.1 — fixed in 4.3.1

How to fix

Upgrade to a fixed version: demsking image-downloader 4.3.1. Check the vendor advisory for mitigations.

References

https://gitlab.com/demsking/image-downloader/-/commit/fb4454304276e2439fb19b98836b3ba903b3aaea
https://gitlab.com/demsking/image-downloader/-/work_items/32

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