CVE-2026-18692

HIGH

Use-After-Free in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potential Remote Code Execution

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2026-18692 has a selected CVSS score of 7.7 (high).

Description

An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed. Subsequent operations could then result in a server crash or, potentially, execution of unintended code.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactTotal

CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 11, 2026 · Source: CVE List

Affected products and versions

1
ProductSourceVersion range

MongoDB Server

Browse MongoDB / MongoDB Server

Default status: unaffected

CVE List8.3.0 to < 8.3.8affected

References

2