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OpenAdvisories
High · 7.1 CVE-2026-18694 EUVD-2026-56917GHSA-5qh4-4xrx-49h2

Out-of-Bounds Read in MongoDB Geospatial Query Processing Leads to Denial of Service and Potential Memory Disclosure

Published Aug 11, 2026 · Updated Aug 11, 2026 · Assigned by mongodb

Description

An issue in MongoDB Server's geospatial query processing could allow an authenticated user with write privileges to cause certain malformed geometry data to be stored and later processed without proper validation. Subsequent queries against this data could then result in the server accessing memory outside its intended bounds. This could result in a server crash (denial of service) and may expose a limited amount of server process memory.

Affected products

VendorProductAffectedFixed
MongoDB MongoDB Server 8.3.0 – < 8.3.8, 8.0 – < 8.0.29, 7.0 – < 7.0.40 8.3.8

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