CVE-2026-26379 | Koha versions up to 25.11 contain a Server-Side Request Forg… | CVSS 6.5 MEDIUM

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.

Metadata

CVE ID: CVE-2026-26379
State: PUBLISHED
Assigner: mitre
Reserved: 2026-02-16 00:00 UTC
Published: 2026-06-03 00:00 UTC
Last updated: 2026-06-04 16:19 UTC
Primary CWE: CWE-918
CWE-918 Server-Side Request Forgery (SSRF)
Vendor / Product: n/a / n/a
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
n/a	n/a	—	n/a

Weakness (CWE)

CWE	Source	Description
—	cna	n/a
CWE-918	adp	CWE-918 Server-Side Request Forgery (SSRF)

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References (3)