CVE-2026-8199 json
Post-auth memory exhaustion via bitwise match expressions
published 5mo ago modified 16d ago also BIT-mongodb-2026-8199 , EUVD-2026-29890
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami mongodb 7.0.34, 8.0.23, 8.2.9, 8.3.2
- MongoDB, Inc. MongoDB Server 7.0.34, 8.0.23, 8.2.9, 8.3.2
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | mongodb | >=7.0.0, <7.0.34 >=8.0.0, <8.0.23 >=8.2.0, <8.2.9 >=8.3.0, <8.3.2 |
7.0.34 8.0.23 8.2.9 8.3.2 |
Affected products
- MongoDB, Inc. MongoDB Server
Classification
- Weakness
-
- CWE-1325 Improperly Controlled Sequential Memory Allocation
- Technology feeds
References
-
jira.mongodb.org
/browse/SERVER-122449
issue-tracking, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-8199
web
Sources
- CVE List CVE-2026-8199
- NVD CVE-2026-8199
- OSV BIT-mongodb-2026-8199
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.