Strict-winding polygons are intentionally unsupported for indexing, but the guard that rejects them does not inspect members of a GeometryCollection, allowing the unsafe path to be reached which ends with an ensuing null-pointer dereference.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MongoDB | MongoDB Server | unaffected |
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Solution
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Workaround
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| Link | Providers |
|---|---|
| https://jira.mongodb.org/browse/SERVER-123440 |
|
Tue, 09 Jun 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An authorized user could trigger a server crash by running a query with a 2dsphere index on a field that stores a GeoJSON GeometryCollection containing a Polygon with a strict-winding CRS. Strict-winding polygons are intentionally unsupported for indexing, but the guard that rejects them does not inspect members of a GeometryCollection, allowing the unsafe path to be reached which ends with an ensuing null-pointer dereference. | |
| Title | GeometryCollection with strict-winding polygon causes server crash during 2dsphere index key generation | |
| Weaknesses | CWE-476 | |
| References |
| |
| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: mongodb
Published:
Updated: 2026-06-09T22:27:49.950Z
Reserved: 2026-05-27T17:48:46.130Z
Link: CVE-2026-9752
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-06-09T23:17:04.770
Modified: 2026-06-09T23:17:04.770
Link: CVE-2026-9752
Redhat
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OpenCVE Enrichment
Updated: 2026-06-10T00:30:17Z