CVE-2026-93765

Document deletion and process crash via unvalidated method-name dispatch in atomic pop operation

State: Published
Severity: 8.3 High
Published: Sep 18, 2026
Updated: Sep 21, 2026
Reserved: Sep 18, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.3 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N	mongodb
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H	mongodb

Weaknesses

CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

Affected Products

Product	Versions
MongoidMongoDB Inc.	9.1.0Affected 9.0.0 through 9.0.11Affected 8.1.0 through 8.1.12Affected 8.0.0 through 8.0.12Affected

References

https://jira.mongodb.org/browse/MONGOID-5973

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