CVE-2026-8199Post-auth memory exhaustion via bitwise match expressions
Updated under an hour ago ()
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It affects MongoDB, Inc. MongoDB Server and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-1325
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mongodb
- NVD analysis
- Analyzed
- Record last updated
- May 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
MongoDB, Inc. MongoDB Server mongodb:server (from the name) | from 7.0 before 7.0.34; from 8.0 before 8.0.23; from 8.2 before 8.2.9; from 8.3 before 8.3.2 | CNA record |
mongodb mongodb mongodb:mongodb | from 7.0.0 before 7.0.34; from 8.0.0 before 8.0.23; from 8.2.0 before 8.2.9; from 8.3.0 before 8.3.2 | NVD |
References
- https://jira.mongodb.org/browse/SERVER-122449issue-tracking, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.