CVE-2026-103648 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in image-downloader
An attacker controlling the download URL can write files outside the intended directory, potentially overwriting critical system files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-103648?
CVE-2026-103648 is a critical path traversal vulnerability in demsking image-downloader, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-103648?
How do I fix CVE-2026-103648?
No fix has been published for CVE-2026-103648 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-103648 being exploited?
There is no known exploitation of CVE-2026-103648 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-h4gg-43m2-62cm.