Stored XSS in Koha Library Management System

Publication date: 2026-06-26

Last updated on: 2026-07-05

Assigner: MITRE

Description

A stored cross-site scripting (XSS) vulnerability in the item 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 item type check-in message field (checkinmsg).

CVSS Scores

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Meta Information

Published

2026-06-26

Last Modified

2026-07-05

Generated

2026-07-17

AI Q&A

2026-06-27

EPSS Evaluated

2026-07-16

NVD

CVE-2026-50767

EUVD

EUVD-2026-39942

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 stored cross-site scripting (XSS) issue found in the item type administration page of the Koha Library Management System up to version 25.11. It allows an authenticated remote attacker with administrator privileges to inject arbitrary web scripts through the item type check-in message field (checkinmsg).

Impact Analysis

An attacker exploiting this vulnerability can inject malicious scripts that may execute in the context of other users' browsers. This can lead to unauthorized actions, theft of session cookies, or other malicious activities within the Koha Library Management System, potentially compromising the integrity and security of the system.

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