CVE-2026-93761
Denial of service via unbounded regex matching in Mongoid's in-memory query matcher
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
An inefficient regular expression complexity issue in the in-memory query evaluation component of the Mongoid library may allow an unauthenticated party to cause excessive processing within an embedding application process. Applications that place user-supplied text into a pattern-matching query condition on an embedded association may become unresponsive.
| CWE | CWE-1333 |
| Vendor | mongodb inc. |
| Product | mongoid |
| Published | Sep 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
MongoDB Inc. / Mongoid
7.2.0 ≤ 7.2.6 7.3.0 ≤ 7.3.5 7.4.0 ≤ 7.4.3 7.5.0 ≤ 7.5.4 7.6.0 ≤ 7.6.1 8.0.0 ≤ 8.0.12 8.1.0 ≤ 8.1.12 9.0.0 ≤ 9.0.11 9.1.0