CVE-2026-18885

Unauthenticated Remote Code Execution in GraphQL Composite Data API

State: Published
Severity: 10.0 Critical
Published: Aug 27, 2026
Updated: Aug 29, 2026
Reserved: Aug 4, 2026

Description

ServiceNow has remediated a code injection vulnerability that was identified in the ServiceNow AI platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to execute arbitrary code in the ServiceNow platform and gain access to, or modify, instance data beyond what was intended.

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.

Scores

CVSS	Score	Vector	Source
4.0	10.0 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	SN

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
ServiceNow AI PlatformServiceNow	before Xanadu Patch 11 Hot Fix 7aAffected before Yokohama Patch 12 Hot Fix 3bAffected before Yokohama Patch 13 Hot Fix 4Affected before Zurich Patch 7b Hot Fix 3Affected before Zurich Patch 8 Hot Fix 5Affected before Zurich Patch 9 Hot Fix 6Affected before Zurich Patch 10 Hot Fix 2m (m-branch)Affected before Zurich Patch 10 Hot Fix 3 (standard)Affected before Zurich Patch 11Affected before Zurich Patch 12Affected before Australia Patch 2 Hot Fix 3Affected before Australia Patch 3 Hot Fix 2Affected before Australia Patch 3mAffected before Australia Patch 4Affected before Australia Patch 5Affected

Product

Versions

ServiceNow AI PlatformServiceNow

before Xanadu Patch 11 Hot Fix 7aAffected
before Yokohama Patch 12 Hot Fix 3bAffected
before Yokohama Patch 13 Hot Fix 4Affected
before Zurich Patch 7b Hot Fix 3Affected
before Zurich Patch 8 Hot Fix 5Affected
before Zurich Patch 9 Hot Fix 6Affected
before Zurich Patch 10 Hot Fix 2m (m-branch)Affected
before Zurich Patch 10 Hot Fix 3 (standard)Affected
before Zurich Patch 11Affected
before Zurich Patch 12Affected
before Australia Patch 2 Hot Fix 3Affected
before Australia Patch 3 Hot Fix 2Affected
before Australia Patch 3mAffected
before Australia Patch 4Affected
before Australia Patch 5Affected

References

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB3152242

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.