CVE-2026-85750

Piwigo arbitrary file read and remote code execution via insecure image processing

Published: Sep 25, 2026Updated: Sep 25, 2026 Sources: CVE List NVDCWE-20

7.2HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:HPrivileges Required

High

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-20

Affected Products

Piwigo

oss-project·FRaka piwigo photo gallery

PiwigoOn-premWeb App

Web & CMS Plugins / cms-core

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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References

https://github.com/Piwigo/Piwigo/security/advisories/GHSA-j9q6-q52g-g8jw

github.com

https://www.helx.io/en/blog/advisory-piwigo

helx.io

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