November 11, 2026

CVE Watchtower

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CVE-2026-118383NVD

Vulnerability Summary

A use-after-free in the replication component of MongoDB Server can occur when a newly elected replica set primary completes catch-up. The condition can be caused by requests that do not require authentication, and may result in the server terminating unexpectedly or, under certain conditions, arbitrary code execution in the context of the server process. Replica set members are affected, including the shard and config server replica set members of sharded clusters; standalone mongod instances are not.
Severity Level
CRITICAL(9.5)
Published Date
Nov 10, 2026
Last Modified
Nov 10, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
Data Pending
Root Weakness (CWE)
CWE-416: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v4.0 Base Metrics — Score 9.5 (CRITICAL)
Attack VectorNetwork
Attack ComplexityHigh
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)High
Integrity (Subsequent System)High
Availability (Subsequent System)High
CVSS v3.1 Base Metrics — Score 9.0 (CRITICAL)
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • MongoDB MongoDB Server >= 9.0.0 and < 9.0.7
  • MongoDB MongoDB Server >= 8.3.0 and < 8.3.16
  • MongoDB MongoDB Server >= 8.0.0 and < 8.0.37
  • MongoDB MongoDB Server >= 7.0.0 and < 7.0.48
  • MongoDB MongoDB Server >= 6.0.0 and < 6.0.30
  • MongoDB MongoDB Server >= 5.0.0 and < 5.0.35
  • MongoDB MongoDB Server >= 4.4.0 and < 4.4.32
Patched Versions
  • MongoDB MongoDB Server 9.0.7
  • MongoDB MongoDB Server 8.3.16
  • MongoDB MongoDB Server 8.0.37
  • MongoDB MongoDB Server 7.0.48
  • MongoDB MongoDB Server 6.0.30
  • MongoDB MongoDB Server 5.0.35
  • MongoDB MongoDB Server 4.4.32
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References