CVE-2026-86858: Unauthenticated Privilege Escalation via GraphQL in ServiceNow AI Platform
ServiceNow has remediated an improper access control security issue that was identified in the ServiceNow AI Platform. This security issue could enable an unauthenticated user, in certain circumstances, to create, modify, or delete instance data beyond what was intended.
In August 2026, 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 is exposed to this issue?
Hosted ServiceNow instances received a security update in August 2026. Partners and self-hosted customers need to apply the provided update or upgrade to a patched release if they have not already done so.
What level of access does an attacker need?
The issue may be exploitable by an unauthenticated user in certain circumstances. Successful exploitation could allow creation, modification, or deletion of instance data beyond intended permissions.
Is there evidence of active exploitation?
ServiceNow states that it is not currently aware of malicious exploitation against ServiceNow instances.
What should self-hosted customers do if they have not updated?
Apply the appropriate ServiceNow update promptly or upgrade to a patched release provided for self-hosted customers.