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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 1.3NVD modified 2026-10-14 13:10
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 9
- https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/reflected_XSS.md
- https://github.com/Piwigo/Piwigo/
- https://github.com/Piwigo/Piwigo/commit/5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e
- https://github.com/Piwigo/Piwigo/releases/tag/16.4.0
- https://github.com/Piwigo/Piwigo/security/advisories/GHSA-rr39-mf4j-6594
- https://vuldb.com/cve/CVE-2026-78187
- https://vuldb.com/submit/885228
- https://vuldb.com/vuln/394569
- https://vuldb.com/vuln/394569/cti