CVE-2026-19780

EUVD-2026-78820

15.09.2026, 17:17

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.

Eval Injection

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
zdi	CNA	8.8 HIGH	NETWORK	LOW	LOW	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
koha	koha	25.12.0	CNA

Common Weakness Enumeration

CWE-95 - Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval").

References

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