How severe is CVE-2026-9752?

CVE-2026-9752 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-9752 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-9752?

CVE-2026-9752 affects Mongodb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-9752?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-9752 have an EU (EUVD) identifier?

Yes. CVE-2026-9752 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35851.

When was CVE-2026-9752 published?

CVE-2026-9752 was published on 2026-06-09 and last updated on 2026-06-18.

CVE-2026-9752

CVE-2026-9752 is a medium-severity vulnerability in Mongodb with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 7.1
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35851
Weakness: CWE-476
Affected product: Mongodb
Published: 2026-06-09
Last modified: 2026-06-18

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.

Frequently asked questions

What is CVE-2026-9752?: 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.
How severe is CVE-2026-9752?: CVE-2026-9752 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-9752 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-9752?: CVE-2026-9752 affects Mongodb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-9752?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-9752 have an EU (EUVD) identifier?: Yes. CVE-2026-9752 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35851.
When was CVE-2026-9752 published?: CVE-2026-9752 was published on 2026-06-09 and last updated on 2026-06-18.

References

https://jira.mongodb.org/browse/SERVER-123440

Affected products (1)

cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*

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