HighSeptember 21, 2026CVSS 7.5
Source: NVD

CVE-2026-91863: CVE-2026-91863 - A specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and ex

A specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and exhaust the thread stack, crashing the parser (denial of service). This is a high threat mapped to CVE-2026-91863; security leaders should validate exposure, prioritize patching, and verify compensat...

Related CVEs

CVE-2026-91863

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SecOps Recommended Triage Checklist

  • 01.Scope & Asset Discovery: Query vulnerability scanners (e.g. Tenable) and software bill of materials (SBOM) to pinpoint affected packages and services.
  • 02.Vendor Patch Application: Prioritize deployment of official security patches released by upstream vendors.
  • 03.Compensating Defense Controls: If patch cannot be applied immediately, enforce strict firewall/WAF boundaries and isolate target instances.
  • 04.Endpoint Behavioral Monitoring: Audit telemetry via EDR (e.g. CrowdStrike) for abnormal child processes or privilege escalation attempts.

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