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.
Last checked: 2026-09-29 04:19 UTC
No exploitation evidence · CISA Coordinator (Assessed 2026-09-19 13:43 UTC)
Fix evidence last checked: 2026-09-29 04:10 UTC