CVE-2026-50765 Cross-site scripting in n/a

Medium 6.1 Published 26 Jun 2026 Updated 5 Jul 2026

Authenticated administrators can inject arbitrary scripts into Koha's restriction type labels, potentially leading to code execution or account takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-50765?

CVE-2026-50765 is a medium-severity cross-site scripting vulnerability in n/a, published on 26 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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).

Weakness: CWE-79

Which versions are affected by CVE-2026-50765?

It affects 1 product.

Products include Koha Koha.

How do I fix CVE-2026-50765?

No fix has been published for CVE-2026-50765 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-50765 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50765 exists.

Sources

Also known as GHSA-wh28-gg5r-p54p.