CVE-2026-41921: Koha 26.05.0 to before 26.05.02, 25.11.0 to before 25.11.07, 25.05.0 to before 25.05.13

CVE-2026-41921. CVSS 3.1 base score 5.4 (MEDIUM, Vendor/CNA). EPSS 0.00298 (percentile 0.2131), scored 21-Oct-2026.

Affected technology

Koha · 26.05.0 to before 26.05.02, 25.11.0 to before 25.11.07, 25.05.0 to before 25.05.13
Koha Community

Description’s affected range: before 26.05.02, 25.11.07, and 25.05.13

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · Low privileges required · Passive user interaction

What an attacker can do

Authenticated staff users can inject malicious scripts by submitting unsanitized input through the suggestion save operation. Vendor/CNA’s CVSS 4.0 assessment (base score 5.1/10) rates confidentiality, integrity and availability impact as none.

Published 23-Oct-2026 06:11 UTC

CWE: CWE-79
CCR priority: 21.7 /100 (P4)
CVSS 3.1: 5.4 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N · Vendor/CNA
EPSS: 0.00298 · percentile 0.21357 · 2026-10-22
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-23 06:11:59.600832+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-23 06:11:01.814928+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-41921.html