CVE-2026-26379

6.5 mediumEPSS 0.2%

Medium (6.5) in koha koha. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 15% of CVEs (scores of 2026-10-31)
CWE: CWE-918
Published: 2026-06-03
Modified: 2026-07-22
Record from: the NVD, synced 2026-10-19

Affected

koha:koha

References

https://g03m0n.github.io/
https://g03m0n.github.io/posts/cve-2026-26379/
https://github.com/Koha-Community/Koha
https://g03m0n.github.io/posts/cve-2026-26379/

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