NULL pointer dereference in MongoDB
CVE-2026-13065
A user with read-only privileges is able to craft an aggregation pipeline using the $linearFill window function operator with a specific sortBy expression type to cause the mongod process to terminate abnormally, resulting in denial of service. The issue stems from insufficient validation of sort specifications during execution.
EPSS: 0.005 (40.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mongodb
- Mongodb Server — versions 7.0, 8.0, 8.2.0
Weakness classification (CWE)
References
- cna@mongodb.com (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-13065?
- CVE-2026-13065 is a medium-severity vulnerability in MongoDB, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-07-22.
- How severe is CVE-2026-13065?
- Medium severity. CVSS v3 base score is 6.5 out of 10.