PT-2026-23454 · Koha · Koha

G03M0N · Published 2026-03-05 · Updated 2026-03-08 · CVE-2026-26377

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Koha versions 25.11 and earlier

Description A Cross Site Scripting issue exists in Koha. A remote attacker may be able to execute arbitrary code through the News function. The issue allows for the injection of malicious scripts into web pages viewed by other users. The vulnerable component is the News function.

Recommendations Update to a version of Koha later than 25.11.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-26377

Affected Products

Koha

References · 6

• 🔥 https://g03m0n.github.io/posts/cve-2026-26377 · Exploit
• https://osv.dev/vulnerability/CVE-2026-26377 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-26377 · Security Note
• https://github.com/Koha-Community/Koha · Note
• https://g03m0n.github.io · Note
• https://twitter.com/CVEnew/status/2030755440020123848 · Twitter Post