CVE-2026-82064: high-severity vulnerability in MongoDB Server
Unauthenticated Denial of Service in MongoDB Server via Assertion Failure in Read Concern Processing on Replica Set Members
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.5%
A security issue in MongoDB Server allows an unauthenticated network user to cause a denial of service on a specific type of replica set member. The server contains an assertion in its read concern processing logic that can be reached without authentication, and the assertion's assumptions about internal state do not hold for all member configurations, causing the server process to terminate.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
MongoDB · MongoDB ServerRelated CVEs — MongoDB Server
In the same product, most dangerous first.
CVE-2026-18692HIGHUse-After-Free in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potential Remote Code ExecutionEPSS 0.6%CVE-2026-82071HIGHInsufficient Validation of Storage Engine Configuration Options in MongoDB Server Leads to Out-of-Bounds WriteEPSS 0.5%CVE-2026-82061HIGHUse-After-Free in MongoDB Server Query Execution Memory Tracking Subsystem Leads to Denial of ServiceEPSS 0.5%CVE-2026-82075HIGHUncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated Denial of ServiceEPSS 0.5%CVE-2026-82067CRITICALImproper Case Sensitivity Handling in MongoDB Server Configuration Validation May Cause Authorization to Remain Disabled at StartupEPSS 0.5%CVE-2026-82052HIGH$regexFindAll may crash mongod server when byte-matching multi-byte UTF-8 charsEPSS 0.5%