VulnerabilityAnalyzed
CVE-2026-26379
Koha versions up to 25.11 contain a Server-Side Request Forgery (SSRF) vulnerability via the Z39.50/SRU server configuration.
MEDIUM 6.5EPSS 0.24%
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- EPSS
- 0.24% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- koha/koha
- Source
- cve@mitre.org
References
- https://g03m0n.github.io/Third Party Advisory
- https://g03m0n.github.io/posts/cve-2026-26379/Exploit, Third Party Advisory
- https://github.com/Koha-Community/KohaProduct
- https://g03m0n.github.io/posts/cve-2026-26379/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.