HIGHCVE-2026-4148Published Modified CNA mongodb
CVE-2026-4148: ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators
A use-after-free vulnerability can be triggered in sharded clusters by an authenticated user with the read role who issues a specially crafted $lookup or $graphLookup aggregation pipeline.
Metrics
- CVSS v4.0
- 8.7
- Severity
- HIGH
- Fixed in
- 7.0.31
- Affected Products
- 1
Fix available
7.0.318.0.208.2.6
Affected packages
- MongoDB Inc / MongoDB Server< 8.2.6 (from 8.2) · < 8.0.20 (from 8.0) · < 7.0.31 (from 7.0)
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NReferences