CVE-2026-50766

MEDIUM
5.4
CVSS Score
Published: June 26, 2026 at 12:00 AM UTC
Updated: July 5, 2026 at 02:30 AM UTC
1 product affected across 1 vendorKoha

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.3%
SSVC
PoC

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 25.11.00

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: cverecord
http://koha.com
ExploitThird Party Advisory
Source: cverecord
https://lgnas.gitbook.io/findings/cve-2026-50766

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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