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Critical vulnerability

Critical memory corruption in MongoDB (CVE-2026-118383)

Memory corruption in MongoDB · Servers and applications

CVE-2026-118383

Pre-authentication use-after-free in MongoDB Server replica set primary catch-up

Severity
Critical 9.5
Published
10 Nov 2026
Fixed in
8.0.37, 8.3.16, 9.0.7
SoftwareAffected versions
MongoDBServers and applications
  • From 9.0.0 before 9.0.7
  • From 8.3.0 before 8.3.16
  • From 8.0.0 before 8.0.37
  • From 7.0.0 before 7.0.48
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-118383
Everything about CVE-2026-118383

From NVD, the CVE Program, OSV.dev with the GitHub Advisory Database, WPVulnerability, WordPress's security advisories and CISA's Known Exploited Vulnerabilities catalog, as they stood when this was written. Each vulnerability's own page has its latest rating and fix. This product uses the NVD API but is not endorsed or certified by the NVD.