vulnerability
MongoDB: CVE-2026-4358: Double Free
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:S/C:P/I:P/A:C) | Mar 17, 2026 | Apr 27, 2026 | Apr 27, 2026 |
Severity
7
CVSS
(AV:N/AC:M/Au:S/C:P/I:P/A:C)
Published
Mar 17, 2026
Added
Apr 27, 2026
Modified
Apr 27, 2026
Description
A specially crafted aggregation query with $lookup by an authenticated user with write privileges can cause a double-free or use-after-free memory issue in the slot-based execution (SBE) engine when an in-memory hash table is spilled to disk.
Solutions
mongodb-upgrade-latestmongodb-upgrade-7_0_31mongodb-upgrade-8_0_20mongodb-upgrade-8_2_6
Rapid7 Labs
2026 Global Threat Landscape Report
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