Use After Free in MongoDB Server
CVE-2026-82063
A use-after-free security issue in the cursor management component of MongoDB Server allows an authenticated user to cause a denial of service. Under specific timing conditions during cursor operations, a stale pointer to a freed resource may be retained and subsequently dereferenced during cursor cleanup, leading to a server process crash.
Vulnerability class: Use-After-Free
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-82063?
- CVE-2026-82063 is a medium-severity vulnerability in MongoDB Server, classified under Use After Free. CVSS score: 5.3/10. Published 2026-09-08.
- How severe is CVE-2026-82063?
- Medium severity. CVSS v3 base score is 5.3 out of 10.