CVE-2026-26379

Koha versions up to 25.11 contain a Server-Side Request Forgery (SSRF) vulnerability via the Z39.50/SRU server configuration. This allows authenticated attackers to perform internal network scanning and identify running services by analyzing server response times.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://g03m0n.github.io/	Third Party Advisory
https://g03m0n.github.io/posts/cve-2026-26379/	Exploit Third Party Advisory
https://github.com/Koha-Community/Koha	Product
https://g03m0n.github.io/posts/cve-2026-26379/	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-06-03 19:16

Updated : 2026-07-22 20:10

NVD link : CVE-2026-26379

Mitre link : CVE-2026-26379

CVE.ORG link : CVE-2026-26379

JSON object : View

Products Affected

koha

koha

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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