CVE-2026-18885: Unauthenticated Remote Code Execution in GraphQL Composite Data API
ServiceNow has remediated a code injection vulnerability that was identified in the ServiceNow AI platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to execute arbitrary code in the ServiceNow platform and gain access to, or modify, instance data beyond what was intended.
ServiceNow deployed a security update to hosted instances and ServiceNow provided the update to our partners and self-hosted customers. We are not currently aware of malicious exploitation against ServiceNow instances.
We recommend customers promptly apply appropriate updates or upgrade to a patched release if they have not already done so.
Affected Software
Event History
Frequently Asked Questions
Who needs to take action for this issue?
Self-hosted customers and partners that have not yet applied the provided update or upgraded to a patched release should act promptly. ServiceNow states that it deployed a security update to hosted instances.
Does exploitation require authentication?
No. In certain circumstances, an unauthenticated user could exploit the code injection issue to execute arbitrary code in the ServiceNow platform.
What could an attacker do if exploitation succeeds?
Successful exploitation could allow arbitrary code execution and access to, or modification of, instance data beyond intended permissions.
Is there known active exploitation?
ServiceNow states that it is not currently aware of malicious exploitation against ServiceNow instances.