CVE-2026-18886: Unauthenticated Privilege Escalation via System Configuration Image Upload Processor
ServiceNow has remediated an improper access control vulnerability that was identified in the ServiceNow AI platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to create or modify instance data beyond what was intended, resulting in privilege escalation.
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 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
Which deployments need to take action?
The issue affects the ServiceNow AI platform. ServiceNow states that hosted instances received a security update, while partners and self-hosted customers were provided the update and should apply it or upgrade to a patched release.
Does exploitation require an authenticated ServiceNow account?
No. The vulnerability could allow an unauthenticated user, in certain circumstances, to create or modify instance data beyond intended permissions, leading to privilege escalation.
Has this vulnerability been exploited in the wild?
ServiceNow states that it is not currently aware of exploitation against ServiceNow instances.