Input validation error in Piwigo - #VU138398
Published: July 20, 2026
Vulnerability identifier: #VU138398
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of user-supplied input in image upload handling. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the system.
Affected software
Piwigo
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.