In the nggallery-manage-gallery page in the Photocrati NextGEN Gallery plugin 2.1.15 for WordPress, XSS is possible for remote authenticated administrators via the images[1][alttext] parameter.
Severity
CVSS 3.1
4.8 medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
EPSS
1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)