CVE-2026-4358 is a high-severity memory corruption vulnerability (CWE-415) affecting MongoDB, specifically a double-free or use-after-free issue in its slot-based execution engine. This flaw can be triggered by an authenticated user with write privileges executing a specially crafted aggregation query with $lookup, leading to a network-based attack. With a CVSS score of 7.5 (HIGH), it carries a high potential impact on confidentiality, integrity, and availability, though the attack complexity is also high. Despite its severity, there is currently no evidence of active exploitation, nor are public exploit tools or significant community discussion available.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 7.0.0, < 7.0.31CPE matchmatch criteria | cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:* | ||
>= 8.0.0, < 8.0.20CPE matchmatch criteria | cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:* | ||
>= 8.2.0, < 8.2.6CPE matchmatch criteria | cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/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
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.