CVE-2026-8199
Post-auth memory exhaustion via bitwise match expressions
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
12th
An authenticated user can cause excess memory usage via bitwise match expression AST processing of $bitsAllSet, $bitsAnySet, $bitsAllClear, and $bitsAnyClear. This contributes to memory pressure and may lead to availability loss by OOM. This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.
| CWE | CWE-1325 |
| Vendor | mongodb, inc. |
| Product | mongodb server |
| Published | May 13, 2026 |
| Last Updated | May 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
MongoDB, Inc. / MongoDB Server
7.0 < 7.0.34 8.0 < 8.0.23 8.2 < 8.2.9 8.3 < 8.3.2