Bug 2538665 (CVE-2026-93761)

Summary: CVE-2026-93761 mongoid: Mongoid: Denial of service via inefficient regular expression matching
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Mongoid. An inefficient regular expression (regex) complexity issue in the in-memory query evaluation component of the Mongoid library may allow an unauthenticated attacker to cause excessive processing within an embedding application. This can lead to a denial of service (DoS) where applications become unresponsive when user-supplied text is placed into a pattern-matching query condition on an embedded association.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2542925, 2542926    
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Description OSIDB Bzimport 2026-09-22 19:57:54 UTC
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.