The Facetag extension 0.0.3 for Piwigo allows XSS via the name parameter to ws.php in a facetag.changeTag action.
http://touhidshaikh.com/blog/poc/facetag-ext-piwigo-stored-xss/
Source: Mitre, NVD
Published: 2018-02-26
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00235