VulnerabilityUndergoing Analysis

CVE-2026-82066

A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server.

MEDIUM 5.3EPSS 0.21%

Does this matter?

Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own.

Description

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 4.0: 5.3 MEDIUMCVSS: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/M
EPSS: 0.21% probability · 12th percentile
CISA KEV: Not listed
Weakness: CWE-125
Source: cna@mongodb.com

References

https://jira.mongodb.org/browse/SERVER-131562

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.