CVE-2026-18692: high-severity vulnerability in MongoDB Server
Use-After-Free in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potential Remote Code Execution
Published
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.6%
An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed. Subsequent operations could then result in a server crash or, potentially, execution of unintended code.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
MongoDB · MongoDB ServerRelated CVEs — MongoDB Server
In the same product, most dangerous first.
CVE-2026-82071HIGHInsufficient 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-2026-82064HIGHUnauthenticated Denial of Service in MongoDB Server via Assertion Failure in Read Concern Processing on Replica Set MembersEPSS 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%