CVE-2026-42322 Piwigo - Command Injection

Piwigo < 16.4.0 contains a command injection caused by reuse of attacker-controlled file extension in admin/themes_standard_pages.php, letting authenticated administrators execute arbitrary commands via uploaded logos.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Required
EPSS
0.53% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution, Information Disclosure, Data Tampering, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Published
25 September 2026
Updated
15 October 2026
Weakness
CWE-434

Vendor fix

Update to version 16.4.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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