Unauthenticated Privilege Escalation via GraphQL in ServiceNow AI Platform

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-86858
StatePUBLISHED
AssignerSN
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-24 19:17:18 UTC
Updated2026-09-24 21:00:46 UTC
DescriptionServiceNow 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.

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-284 | CWE-284 CWE-284 Improper Access Control

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
High
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA ServiceNow ServiceNow AI Platform affected Yokohama Patch 13 Hot Fix 5a custom Not specified
CNA ServiceNow ServiceNow AI Platform affected Zurich Patch 10 Hot Fix 3b custom Not specified
CNA ServiceNow ServiceNow AI Platform affected Zurich Patch 10 Hot Fix 4a W32 custom Not specified
CNA ServiceNow ServiceNow AI Platform affected Zurich Patch 11 Hot Fix 3 custom Not specified
CNA ServiceNow ServiceNow AI Platform affected Australia Patch 2 Hot Fix 4b W32 custom Not specified
CNA ServiceNow ServiceNow AI Platform affected Australia Patch 4 Hot Fix 3 custom Not specified
CNA ServiceNow ServiceNow AI Platform affected Australia Patch 5 custom Not specified

References

ReferenceSourceLinkTags
support.servicenow.com/kb [email protected] support.servicenow.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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