Calling createIndex with certain index types can crash mongod
Priority LOW 31CWE-617Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-617.
Summary
Creating a "2dsphere_bucket" index on a non-timeseries bucket collection will succeed, but any subsequent attempt to insert a document which triggers updating that index will crash the server. A similar issue occurs when creating "queryable_encrypted_range" indices. This issue affects MongoDB Server v7.0 versions prior to 7.0.32, v8.0 versions prior to 8.0.21 and v8.2 versions prior to 8.2.6
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0024 15th percentileScored 2026-11-07
Fix Fixed MongoDB Server (MongoDB, Inc.): 7.0.32, 8.0.21, 8.2.6
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MongoDB | MongoDB Server | 7.0 to before 7.0.32; 8.0 to before 8.0.21; 8.2 to before 8.2.6 | 7.0.32, 8.0.21, 8.2.6 | Patch available | CNA |
- MongoDB Server VendorMongoDB Affected 7.0 to before 7.0.32; 8.0 to before 8.0.21; 8.2 to before 8.2.6 Fixed in 7.0.32, 8.0.21, 8.2.6 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* | 7.0.0 to before 7.0.32; 8.0.0 to before 8.0.21; 8.2.0 to before 8.2.6 | Vulnerable | MongoDB |
- cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.0.32; 8.0.0 to before 8.0.21; 8.2.0 to before 8.2.6 Vulnerable ·MongoDB
Remediation
- Fix · CNA MongoDB Server (MongoDB, Inc.) Fixed in 7.0.32, 8.0.21, 8.2.6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-8843
- 2026-10-03 Alias added: GHSA-v7q4-vccc-3jxg
References
More Mongodb vulnerabilities
- TI-2025-13542 Zlib compressed protocol header length confusion may allow memory read KEVCVSS 4.0HIGH 8.7
- TI-2013-01669 MongoDB before 2.0.9 and 2.2.x before 2.2.4 does not properly validate requests to the… CVSS 2.0MEDIUM 6.0
- TI-2026-56639 Uncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated Denial of Service CVSS 4.0HIGH 8.7
- TI-2026-56628 Reachable assertion in MongoDB Server CVSS 4.0HIGH 8.7
- TI-2026-15322 Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial of Service on mongos CVSS 4.0HIGH 8.7
- TI-2026-08537 Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflow CVSS 4.0HIGH 8.7
Sources
- CVE-2026-8843 · CVE Program
- CVE-2026-8843 · NVD
- FIRST EPSS
- GHSA-v7q4-vccc-3jxg · GitHub Advisory Database · CC BY 4.0
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