Medium severity · published Jul 22, 2026
CVE-2026-13074
Awaitable Hello Command in Exhaust Mode Unthrottled Response Loop Leading to Denial of Service
5.3
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
MongoDB · MongoDB
7.0 before 7.0.39; 8.0 before 8.0.28; 8.2.0 before 8.2.12; 8.3.0 before 8.3.7 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-13074
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-13074
Vendor Advisory
https://jira.mongodb.org/browse/SERVER-128517
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