CVE-2026-93765 Mongoid - Unsafe Reflection

Mongoid contains an unsafe reflection vulnerability in the document persistence layer caused by unsafe key handling from unauthenticated input, letting attackers cause unintended method invocation and data removal, exploit requires unauthenticated input.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.51% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Unsafe Reflection
Impact
Denial Of Service, Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Published
18 September 2026
Updated
15 October 2026
Weakness
CWE-470

Vendor fix

Update to the latest version of Mongoid.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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