CVE-2026-4148
EPSS 0.07%ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators
Published: 5/13/2026Modified: 5/13/2026
Description
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.
Affected packages (1)
- Bitnami/mongodb>= 7.0.0, < 7.0.31, >= 8.0.0, < 8.0.20, >= 8.2.0, < 8.2.6, >= 8.3.0, < 8.3.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |