CVE-2026-50765: Koha

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

A stored cross-site scripting (XSS) vulnerability in the patron restriction type administration page of Koha Library Management System 0 through 25.11 versions allow an authenticated remote attacker with administrator privileges to inject arbitrary web scripts via the restriction type label (display_text field).

Affected products

• Koha Koha: up to and including 25.11.00

Published 2026-06-26. Last modified 2026-07-05.