CVE-2026-19780 Koha Eval Code Injection Remote Code Execution Vulnerability
Authenticated attackers can execute arbitrary code via eval injection in Koha's web service, requiring immediate patching.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19780?
CVE-2026-19780 is a high-severity code injection vulnerability in Koha, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-95
Which versions are affected by CVE-2026-19780?
How do I fix CVE-2026-19780?
No fix has been published for CVE-2026-19780 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-19780 being exploited?
There is no known exploitation of CVE-2026-19780 in the wild and no public exploit code.
Sources
Also known as GHSA-rpfv-xv37-p4ch.