CVE-2026-13074

MEDIUM

Awaitable Hello Command in Exhaust Mode Unthrottled Response Loop Leading to Denial of Service

Title source: cna

Description

An unauthenticated remote client can cause excessive CPU consumption on a MongoDB server by sending a specific combination of parameters to the awaitable hello command in exhaust mode. The server's handling of this combination results in a response loop that bypasses normal throttling, allowing a small number of connections to degrade server availability.

References (1)

Core 1

Core References

https://jira.mongodb.org/browse/SERVER-128517

Scores

CVSS v3 5.3

EPSS 0.0026

EPSS Percentile 17.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-770

Status published

Products (4)

MongoDB/MongoDB Server 7.0 - 7.0.39

MongoDB/MongoDB Server 8.0 - 8.0.28

MongoDB/MongoDB Server 8.2.0 - 8.2.12

MongoDB/MongoDB Server 8.3.0 - 8.3.7

Published Jul 22, 2026

Tracked Since Jul 23, 2026