CVE-2026-26379

6.5 MEDIUM
Published: June 03, 2026 Modified: June 04, 2026
View on NVD

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://g03m0n.github.io/
Source: cve@mitre.org
Third Party Advisory
https://g03m0n.github.io/posts/cve-2026-26379/
Source: cve@mitre.org
Exploit Third Party Advisory
https://github.com/Koha-Community/Koha
Source: cve@mitre.org
Product
https://g03m0n.github.io/posts/cve-2026-26379/
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Third Party Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
0.2%
12th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

koha