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CVE-2026-74820 – Unauthenticated SQL Injection (RCE-level DB Compromise) – ServiceNow AI Platform (X

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Summary

CVE-2026-74820 is a critical SQL injection vulnerability in the ServiceNow AI Platform, reachable through a dynamic schema ORDER BY clause. The flaw allows an unauthenticated attacker to execute arbitrary SQL statements against the instance’s underlying database, potentially exposing or modifying data beyond the intended scope. ServiceNow rated the issue maximum severity and disclosed it alongside several other critical flaws in its August 27, 2026 security advisory.

Technical details

  • Root cause: User-influenced input is incorporated into a dynamic schema ORDER BY clause without adequate sanitization, allowing injection of arbitrary SQL.
  • Trigger conditions: No authentication or user interaction is required to reach the vulnerable code path.
  • Attack vector: Network — the flaw is remotely exploitable over HTTP(S) against the exposed ServiceNow instance.
  • Impact: Arbitrary SQL execution against the instance database, enabling unauthorized access to or modification of data outside the intended scope. ServiceNow has stated it is not aware of malicious exploitation specific to this CVE as of the advisory date.

Affected software

  • ServiceNow AI Platform, Xanadu release: versions before Patch 11 Hot Fix 7a
  • ServiceNow AI Platform, Yokohama release: versions before Patch 12 Hot Fix 3b and Patch 13 Hot Fix 4
  • ServiceNow AI Platform, Zurich release: versions before Patch 7b Hot Fix 3, Patch 8 Hot Fix 5, Patch 9 Hot Fix 6, Patch 10 Hot Fix 2m/3, Patch 11, or Patch 12
  • ServiceNow AI Platform, Australia release: versions before Patch 2 Hot Fix 3, Patch 3 Hot Fix 2, Patch 3m, Patch 4, or Patch 5

Severity

CVSS v4.0 Base Score: 10.0 (Critical)
Vector: 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
(No CVSS v3.1 vector has been published for this CVE.)

Mitigation and recommended actions

  • Immediate: Upgrade to the patched builds specified by ServiceNow for each release family — Xanadu Patch 11 Hot Fix 7a or later; Yokohama Patch 12 Hot Fix 3b / Patch 13 Hot Fix 4 or later; Zurich Patch 7b Hot Fix 3, Patch 8 Hot Fix 5, Patch 9 Hot Fix 6, Patch 10 Hot Fix 2m/3, Patch 11, or Patch 12; Australia Patch 2 Hot Fix 3, Patch 3 Hot Fix 2, Patch 3m, Patch 4, or Patch 5.
  • ServiceNow has already applied the fix to its own hosted (cloud) instances; self-hosted and partner-hosted customers must apply the update themselves.
  • If immediate patching is not possible, review the ServiceNow security advisory for any interim guidance and restrict/monitor network exposure of the instance until patched.

References

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