CVE-2026-93765

critical

Mongoid contains an unsafe reflection weakness in the document persistence layer of its object-document mapping code.

Vendor / product: Mongodb — mongoid

Mongoid contains an unsafe reflection weakness in the document persistence layer of its object-document mapping code. Input whose keys are passed through from an unauthenticated party by an embedding application can cause unintended internal method invocation instead of the intended array field update. This may result in unintended removal of stored records and in the embedding application becoming unresponsive.

CVSS

9.1

9.1 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Severity source: NVD CVSS v3.1 (cna@mongodb.com)

Timeline (UTC)

Published: 2026-09-18 17:17

Modified: 2026-09-25 14:10

NVD status: Analyzed

Last synced 2 days ago

Verified against the source API 2026-10-27 06:54 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

mongodb / mongoid ≥8.0.0 <8.0.12, ≥8.1.0 <8.1.13, ≥9.0.0 <9.0.12, 9.1.0

Weakness classification (CWE)

CWE-470

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://jira.mongodb.org/browse/MONGOID-5973 cna@mongodb.com

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:54 UTC · record ↗

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CVE-2026-93765

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References

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