Out-of-bounds Read in Mongodb Server
CVE-2026-18688
An issue in MongoDB Server's aggregation framework could allow an authenticated user to trigger an out-of-bounds memory read by providing a specially formed numeric parameter in a certain aggregation pipeline stage. This could result in a…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H.
Affected products
- Mongodb Server — versions 8.3.0, 8.0, 7.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-18688?
- CVE-2026-18688 is a high-severity vulnerability in Mongodb Server, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2026-08-11.
- How severe is CVE-2026-18688?
- High severity. CVSS v3 base score is 7.1 out of 10.