CVE-2026-93765 Document deletion and process crash via unvalidated method-name dispatch in atomic pop operation
Unvalidated method dispatch in Mongoid allows attackers to delete records and crash the application via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93765?
CVE-2026-93765 is a high-severity code injection vulnerability in MongoDB Inc. Mongoid, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Mongoid contains an unsafe reflection weakness in the document persistence layer of its object-document mapping code. Input whose keys are passed through from an unauthenticated party by an embedding application can cause unintended internal method invocation instead of the intended array field update. This may result in unintended removal of stored records and in the embedding application becoming unresponsive.
Weakness: CWE-470
Which versions are affected by CVE-2026-93765?
It affects 1 product.
Products include Mongodb Mongoid.
How do I fix CVE-2026-93765?
No fix has been published for CVE-2026-93765 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-93765 being exploited?
There is no known exploitation of CVE-2026-93765 in the wild and no public exploit code.
Other vulnerabilities in MongoDB Inc. Mongoid
- CVE-2026-93762 Data deletion and attribute disclosure via field-name method injection in in-memory queries
- CVE-2026-93759 Server-side JavaScript injection via string query criteria bypassing the strict operator allowlist
- CVE-2026-93761 Denial of service via unbounded regex matching in Mongoid's in-memory query matcher
- CVE-2026-93758 Cross-principal document update, theft, and deletion via unvalidated id in nested attributes
- CVE-2026-93760 NoSQL injection of JavaScript-executing query operators via unsafe-by-default operator guard
Sources
Also known as GHSA-8899-fxx7-fwx3.