CVE-2026-93761: high-severity vulnerability in MongoDB Inc. Mongoid
Denial of service via unbounded regex matching in Mongoid's in-memory query matcher
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.5%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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-2026-93759HIGHServer-side JavaScript injection via string query criteria bypassing the strict operator allowlistEPSS 0.4%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%