CVE-2026-19780

High

Description

Koha Eval Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Koha. Authentication is required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 8081 by default. The issue results from the lack of proper validation of a user-supplied string before passing it to the eval function. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-29165.

SeverityHigh
CVSS8.8
Exploit probability—
ProductKoha
PublishedSep 15, 2026
First seenSep 15, 2026
Weakness typeCWE-95CWE-95

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
Koha Koha25.12.00—

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CVE-2026-19780 · Koha · Dark Radar