Skip to content
OpenAdvisories
High · 8.1 CVE-2026-82061 EUVD-2026-72948GHSA-5pfw-53c7-27v7

Use-After-Free in MongoDB Server Query Execution Memory Tracking Subsystem Leads to Denial of Service

Published Sep 8, 2026 · Updated Sep 8, 2026 · Assigned by mongodb

Description

A use-after-free security issue exists in the server's query execution memory tracking subsystem. An authenticated user with read privileges can trigger a write to freed heap memory through a sequence of standard database commands, leading to server process crash or potential memory corruption. No user interaction is required.

Affected products

VendorProductAffectedFixed
MongoDB MongoDB Server 8.3.0 – < 8.3.9 8.3.9

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu Pro 20.04 LTS mongodb No fix yet —
Ubuntu Pro 18.04 LTS mongodb No fix yet —
Ubuntu Pro 16.04 LTS mongodb No fix yet —
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 14.04 LTS mongodb No fix yet —

Advisories 1

References