Name: CVE-2026-82066: Out-of-bounds Read
Creator: Rapid7
Published: 2026-09-08T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-82066, CWE-125, CVSS 8.1, EPSS 0.00388

A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server. An authenticated user with database read and write privileges can trigger the security issue through crafted query operations, causing the server to read memory beyond allocated buffer boundaries. The revealed memory contents may be partially observable through diagnostic query statistics output.

CVSS Details

CVSS 4.0 Base Score: 5.3 (MEDIUM)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 8.1
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Mongodb	—	Upgrade MongoDB to version 8.3.9Upgrade MongoDB to version 8.0.30Upgrade MongoDB to version 7.0.41Upgrade to the latest version of MongoDB	Sep 23, 2026	Sep 8, 2026

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CVSS Details

Covered by Rapid7

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