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10.0

ServiceNow AI platform allows unauthorized data changes

CVE-2026-18886 · published 7 days ago
Summary

The AI features in ServiceNow could let someone without a login alter or add data they shouldn’t, potentially gaining higher privileges. ServiceNow has released a security update for both cloud and on‑premises versions, and no attacks have been reported. Apply the update or upgrade to the patched version as soon as possible.

What to do
  • Update servicenow servicenow ai platform to version Xanadu Patch 11 Hot Fix 7a or later.
Affected software
VendorProductAffected versions
servicenow servicenow ai platform < Xanadu Patch 11 Hot Fix 7a
Original advisory text
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.
References
Severity
10.0 Critical
CVSS 4.0: 10.0 (NVD)
Exploitation
EPSS <1%
Type
CWE-284Improper Access Control
Timeline
Published27 Aug 2026
Updated2 Sep 2026
First seen27 Aug 2026
Sources
CVE-2026-18886 · NVD
CVE-2026-18886 · MITRE
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