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CVE-2026-8199

Post-auth memory exhaustion via bitwise match expressions

Published: May 13, 2026Updated: May 13, 2026 Sources: CVE List NVDCWE-1325
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.2%
Top 86.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-1325

Affected Products

mongodbmongodb
On-premDatabase
Databases / nosql
MongoDB ServerMongoDB, Inc.
Mixed
Databases / nosql
mongodbcommercialUSDatabases
mongodb, inc.commercialUSDatabasesaka mongodb

Exploitability

Official Patch Available

References

https://jira.mongodb.org/browse/SERVER-122449
jira.mongodb.org

Timeline

Published
May 13, 2026
Last Updated
May 13, 2026

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