CVE-2026-26379

6.5 MEDIUM

Koha versions up to 25.11 contain a Server-Side Request Forgery (SSRF) vulnerability via the Z39.50/SRU server configuration

Published: 2026-06-03 · Last updated: 2026-06-04

Severity and scoring

CVSS: 6.5 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE: CWE-918

Affected products

Vendor	Product
koha	koha

Description

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-26379
[Other]https://g03m0n.github.io/
[Exploit reference]https://g03m0n.github.io/posts/cve-2026-26379/
[Other]https://github.com/Koha-Community/Koha
[Exploit reference]https://g03m0n.github.io/posts/cve-2026-26379/

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