CVE-2026-50766
Received Received - Intake
Stored XSS in Koha Library Management System

Publication date: 2026-06-26

Last updated on: 2026-06-26

Assigner: MITRE

Description
A stored cross-site scripting (XSS) vulnerability in the OPAC item detail page of Koha Library Management System through 25.11 allows an authenticated remote attacker with edit_items permission to inject arbitrary web scripts via the item public notes field (items.itemnotes).
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-06-26
Last Modified
2026-06-26
Generated
2026-06-27
AI Q&A
2026-06-27
EPSS Evaluated
N/A
NVD
CVE-2026-50766
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
koha koha_library_management_system 25.11
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability is a stored cross-site scripting (XSS) issue in the Koha Library Management System, specifically on the OPAC item detail page. It affects versions up to 25.11. An authenticated remote attacker who has the edit_items permission can exploit this vulnerability by injecting arbitrary web scripts into the item public notes field (items.itemnotes). These scripts are then stored and displayed to users, potentially leading to malicious actions.

Impact Analysis

The impact of this vulnerability includes the possibility for an attacker to execute malicious scripts in the context of users viewing the affected item detail page. This can lead to session hijacking, theft of sensitive information, defacement of the website, or other malicious activities that compromise user security and trust.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-50766. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart