CVE-2026-18886: Vulnerability in ServiceNow ServiceNow AI Platform
Description
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.
CVSS v4.0
Score 10.0critical
Affected software
ServiceNow
ServiceNow AI Platform
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18886 is an improper access control vulnerability in the ServiceNow AI Platform that could enable unauthenticated users to escalate privileges by creating or modifying instance data beyond intended scope. ServiceNow has addressed this issue by deploying security updates to its cloud-hosted instances and distributing patches to partners and self-hosted customers. The vulnerability is rated critical with a CVSS 4.0 score of 10. No exploitation in the wild has been reported.
Potential Impact
Successful exploitation could result in privilege escalation, allowing unauthorized users to create or modify data within ServiceNow AI Platform instances beyond their intended permissions. This could compromise the integrity and security of affected instances.
Mitigation Recommendations
ServiceNow has deployed security updates to its cloud-hosted instances and provided patches to partners and self-hosted customers. Customers should promptly apply the provided updates or upgrade to a patched release if they have not already done so. Since this is a cloud service, ServiceNow manages remediation for hosted instances.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- SN
- Date Reserved
- 2026-08-04T19:02:05.799Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Is Cloud Service
- true
Threat ID: 6a909ceeacd9273b49b2cd38
Added to database: 08/27/2026, 20:24:14 UTC
Last enriched: 09/07/2026, 13:24:59 UTC
Last updated: 10/10/2026, 06:48:15 UTC
Views: 90
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