Bug 2538367 (CVE-2026-93759)

Summary: CVE-2026-93759 Mongoid: Mongoid: Server-side JavaScript injection allows information disclosure and data manipulation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in Mongoid where it fails to properly neutralize string-typed query criteria. This vulnerability allows an unauthenticated attacker to inject server-side JavaScript expressions into database queries. Successful exploitation can lead to the unintended disclosure of sensitive stored data, unauthorized modification of documents, and potential degradation of database performance.
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Bug Depends On: 2543206    
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Description OSIDB Bzimport 2026-09-22 18:18:32 UTC 
Mongoid does not neutralize a string-typed query criterion supplied to its query builder, and instead passes it to the database as a server-side JavaScript expression. An unauthenticated party able to influence the value an application supplies as a query argument may cause code of their choosing to be evaluated by the database engine. This may result in unintended disclosure of stored field values, unintended selection of documents for application-initiated writes, and reduced database performance.