XSS in Koha Library Management System Patron Restriction

Publication date: 2026-06-26

Last updated on: 2026-07-05

Assigner: MITRE

Description

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).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-06-26

Last Modified

2026-07-05

Generated

2026-07-17

AI Q&A

2026-06-27

EPSS Evaluated

2026-07-15

NVD

CVE-2026-50765

EUVD

EUVD-2026-39940

Affected Vendors & Products

Vendor	Product	Version / Range
koha	koha	to 25.11.00 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a Cross-Site Scripting (XSS) issue found in the patron restriction type administration page of the Koha Library Management System up to version 25.11. It allows an authenticated remote attacker who has administrator privileges to inject arbitrary web scripts through the restriction type label (display_text field).

Impact Analysis

An attacker exploiting this vulnerability could execute arbitrary scripts in the context of the administrator's browser session. This could lead to unauthorized actions being performed, theft of sensitive information such as session tokens, or manipulation of the web interface.

Hi! I’m here to help you understand CVE-2026-50765. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70