CVE-2026-42756 Path traversal in QuickWebP – Compress / Optimize Images & Convert WebP | SEO Friendly
An attacker can delete arbitrary files on the server via path traversal in the QuickWebP WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42756?
CVE-2026-42756 is a critical path traversal vulnerability in Ludwig You QuickWebP – Compress / Optimize Images & Convert WebP | SEO Friendly, published on 27 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Ludwig You QuickWebP – Compress / Optimize Images & Convert WebP | SEO Friendly quickwebp allows Path Traversal.This issue affects QuickWebP – Compress / Optimize Images & Convert WebP | SEO Friendly: from n/a through <= 3.2.7.
Weakness: CWE-22
Which versions are affected by CVE-2026-42756?
How do I fix CVE-2026-42756?
No fix has been published for CVE-2026-42756 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-2026-42756 being exploited?
There is no known exploitation of CVE-2026-42756 in the wild and no public exploit code.
Sources
Also known as GHSA-7hfx-87f9-p7x4.