Input validation error in ServiceNow - CVE-2026-0542
Published: February 26, 2026
Vulnerability identifier: #VU123308
CSH Severity: Critical
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-0542
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote non-authenticated attacker can pass specially crafted input to the application and execute arbitrary code on the target system.
Affected software
ServiceNow
How to mitigate CVE-2026-0542
Install updates from vendor's website.
ServiceNow - addressed in versions Xanadu Patch 11 Hotfix 1a, Yokohama Patch 10 Hotfix 1b, Yokohama Patch 12, Zurich Patch 4 Hotfix 3b, Zurich Patch 5