Security Bulletin: MongoDB Enterprised Advanced affected by: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') (CVE-2026-40477, CVE-2026-40478) — CVE-2026-40478

Summary

CVE-2026-40478 is a advisory from IBM. Security Bulletin: MongoDB Enterprised Advanced affected by: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') (CVE-2026-40477, CVE-2026-40478) Severity/Threat: critical.

Product

MongoDB Enterprise Advanced with IBM

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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