CVE-2026-78187

Description

A vulnerability has been found in Piwigo 16.3.0. This impacts an unknown function of the component Public Authentication Page. Such manipulation of the argument lang leads to cross site scripting. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 16.4.0 will fix this issue. The name of the patch is 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e. It is recommended to upgrade the affected component.

References

https://vuldb.com/vuln/394569/cti

https://vuldb.com/vuln/394569

https://vuldb.com/submit/885228

https://vuldb.com/cve/CVE-2026-78187

https://github.com/Piwigo/Piwigo/security/advisories/GHSA-rr39-mf4j-6594

https://github.com/Piwigo/Piwigo/releases/tag/16.4.0

https://github.com/Piwigo/Piwigo/commit/5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e

https://github.com/Piwigo/Piwigo/

https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/reflected_XSS.md

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS