CVE-2026-26378

EUVD-2026-34169
Cross Site Scripting vulnerability in Koha 25.11 and before allows a remote attacker to execute arbitrary code via file upload function in Invoice features
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 21%
Affected Products (NVD)
VendorProductVersion
kohakoha
𝑥
≤ 25.11.00
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://g03m0n.github.io
https://g03m0n.github.io/posts/cve-2026-26378/
https://github.com/Koha-Community/Koha
https://g03m0n.github.io/posts/cve-2026-26378/