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CVE-2026-18886 is a critical improper access control vulnerability in the ServiceNow AI Platform system configuration image upload processor. The vulnerable processor can permit an unauthenticated user, under certain circumstances, to create or modify instance data outside intended authorization boundaries. The unauthorized data changes can subsequently be used to escalate privileges.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
23 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
One of two critical, unauthenticated ServiceNow vulnerabilities described as allowing malicious code to reach affected systems.
A CVSS v4 10.0 improper-access-control vulnerability in the ServiceNow system-configuration image-upload processor. It could enable an unauthenticated attacker to create or alter instance data and escalate privileges.
A critical unauthenticated, low-complexity improper-access-control vulnerability in the ServiceNow AI platform that permits arbitrary data creation or modification and privilege escalation.
A critical improper-access-control vulnerability in ServiceNow's system configuration image upload processor that may permit unauthenticated data creation or modification and privilege escalation.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.