Origin validation error in MarkLogic - CVE-2026-9191
Published: October 12, 2026
Vulnerability identifier: #VU154119
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-9191
CWE-ID: CWE-346
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform unauthorized actions or compromise an authenticated session.
The vulnerability exists due to insufficient isolation of user-supplied code from HTTP request, response, and session state in certain REST and XDBC evaluation paths when executing user-supplied code. A remote user can execute code through an affected evaluation path to perform unauthorized actions or compromise an authenticated session.
Affected software
MarkLogic
How to mitigate CVE-2026-9191
Install security update from vendor's website.
MarkLogic - addressed in versions 11.3.7, 12.1