CVE-2026-26378

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-26378
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

5.4 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://g03m0n.github.io Third Party Advisory
https://g03m0n.github.io/posts/cve-2026-26378/ Exploit Third Party Advisory
https://github.com/Koha-Community/Koha Product
https://g03m0n.github.io/posts/cve-2026-26378/ Exploit Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:koha:koha:*:*:*:*:*:*:*:*
History

04 Jun 2026, 18:49

Type Values Removed Values Added
First Time Koha
Koha koha
References () https://g03m0n.github.io - () https://g03m0n.github.io - Third Party Advisory
References () https://g03m0n.github.io/posts/cve-2026-26378/ - () https://g03m0n.github.io/posts/cve-2026-26378/ - Exploit, Third Party Advisory
References () https://github.com/Koha-Community/Koha - () https://github.com/Koha-Community/Koha - Product
CPE cpe:2.3:a:koha:koha:*:*:*:*:*:*:*:*

04 Jun 2026, 14:16

Type Values Removed Values Added
CWE CWE-79
References () https://g03m0n.github.io/posts/cve-2026-26378/ - () https://g03m0n.github.io/posts/cve-2026-26378/ -
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.4

03 Jun 2026, 19:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-06-03 19:16

Updated : 2026-06-04 18:49

NVD link : CVE-2026-26378

Mitre link : CVE-2026-26378

CVE.ORG link : CVE-2026-26378

JSON object : View

Products Affected

koha

  • koha
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')