CVE-2026-85750 Piwigo arbitrary file read and remote code execution via insecure image processing
Attackers can achieve remote code execution and read arbitrary files by uploading malicious images processed by Imagick in Piwigo.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-85750?
CVE-2026-85750 is a high-severity code injection vulnerability in Piwigo, published on 25 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Piwigo before v16.4.0 is vulnerable to arbitrary file read and remote code execution in image upload handling when using the Imagick library due to insufficient validation and unsafe processing of user-supplied image files. By abusing format confusion (e.g., disguising SVG content as PNG), an attacker can trigger unintended interpretation of embedded SVG elements that reference local files. In more advanced scenarios, the Imagick support for Magick Scripting Language (MSL) may be abused to process attacker-controlled instructions, potentially leading to unauthorized server-side file writes and remote code execution, depending on configuration. This has been patched in 16.4.0.
Weakness: CWE-20
Which versions are affected by CVE-2026-85750?
How do I fix CVE-2026-85750?
No fix has been published for CVE-2026-85750 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-85750 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85750 exists.
Sources
Also known as GHSA-j9q6-q52g-g8jw.