CVE-2026-26379

MEDIUM EPSS 15.3%
Published Jun 3, 20263w ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Jun 3, 2026 3w ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
6.5
Exploitability
3.9
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
15.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-918 Server-Side Request Forgery (SSRF) Validation

Affected Products 1

VendorProductVersionRange
kohakoha* ≤25.11.00

References 3

  • g03m0n.github.io https://g03m0n.github.io/
    Third Party Advisory
  • g03m0n.github.io https://g03m0n.github.io/posts/cve-2026-26379/
    ExploitThird Party Advisory
  • github.com https://github.com/Koha-Community/Koha
    Product

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.