CVE-2026-11933
Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.
| CWE | CWE-787 |
| Vendor | mongodb |
| Product | mongodb |
| Ecosystems | |
| Industries | Technology |
| Published | Jun 12, 2026 |
| Last Updated | Jun 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
MongoDB / MongoDB
8.3.0 ≤ 8.3.3 8.2.0 ≤ 8.2.10 8.0.0 ≤ 8.0.25 7.0.0 ≤ 7.0.36 6.0 ≤ 6.0.28 5.0 ≤ 5.0.33 4.4.0 ≤ 4.4.30