CVE-2026-19780: Koha Eval Code Injection Remote Code Execution Vulnerability

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-15 · updated 2026-09-22
Weakness: CWE-95

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.

Affected products

Koha Community Koha: 25.12.00

References

https://www.zerodayinitiative.com/advisories/ZDI-26-616/

Get alerted when CVE-2026-19780 or the next vulnerability affects your stack