CVE-2026-19780 Koha - Code Injection & Remote Code Execution

Koha contains a code injection vulnerability caused by improper validation of user-supplied strings passed to the eval function in the web service on TCP port 8081, letting authenticated attackers execute arbitrary code remotely.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.58% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Code Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-95

Vendor fix

Update to the latest version of Koha.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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