CVE-2026-19780: Koha Eval Code Injection Remote Code Execution Vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
Which deployments are exposed by default?
Affected Koha installations exposing the web service are at risk. The service listens on TCP port 8081 by default.
What access does an attacker need?
An attacker must authenticate to the affected Koha installation. Exploitation can be performed remotely through the web service.
What level of access can successful exploitation provide?
Successful exploitation allows arbitrary code execution in the context of the service account. The reported impact includes compromise of confidentiality, integrity, and availability.