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Collection validators using collation-accepting expressions can crash MongoDB Server on insert

MongoDB Server · CVE-2026-104004
0 news outlets1 CERTs and agencies0 researchers

What is it?

MongoDB Server's collection validation feature may not properly handle certain expressions stored in a validator. In some cases, this can cause the server process to stop running when a document is later inserted. The behavior can occur for authenticated users with write access.

Evidence

CERTs and agencies (1)

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
6.5
EPSS
0.2%
First seen
6 h ago
Status
confirmed

All MongoDB vulnerabilities