CVE-2026-93759: high-severity vulnerability in MongoDB Inc. Mongoid
Server-side JavaScript injection via string query criteria bypassing the strict operator allowlist
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.4%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
Affected products
MongoDB Inc. · MongoidRelated CVEs — MongoDB Inc. Mongoid
In the same product, most dangerous first.
CVE-2026-93762CRITICALData deletion and attribute disclosure via field-name method injection in in-memory queriesEPSS 0.6%CVE-2026-93760HIGHNoSQL injection of JavaScript-executing query operators via unsafe-by-default operator guardEPSS 0.5%CVE-2026-93765HIGHDocument deletion and process crash via unvalidated method-name dispatch in atomic pop operationEPSS 0.5%CVE-2026-93761HIGHDenial of service via unbounded regex matching in Mongoid's in-memory query matcherEPSS 0.5%CVE-2026-93758HIGHCross-principal document update, theft, and deletion via unvalidated id in nested attributesEPSS 0.4%CVE-2026-93763HIGHSilent plaintext persistence via unresolved callable database name in encryption schema mapEPSS 0.2%