MongoDB Ruby Driver up to 7.6.1/8.0.12/8.1.12/9.0.10 Mongoid::Criteria permissive list of allowed inputs

Summaryinfo

A vulnerability, which was classified as critical, has been found in MongoDB Ruby Driver up to 7.6.1/8.0.12/8.1.12/9.0.10. Affected by this vulnerability is the function Mongoid::Criteria. This manipulation causes Remote Privilege Escalation. This vulnerability is tracked as CVE-2026-2302. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in MongoDB Ruby Driver up to 7.6.1/8.0.12/8.1.12/9.0.10. Affected by this vulnerability is the function Mongoid::Criteria. The manipulation with an unknown input leads to a remote privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-183. The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are explicitly allowed by policy because the inputs are assumed to be safe, but the list is too permissive - that is, it allows an input that is unsafe, leading to resultant weaknesses. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Under specific conditions when processing a maliciously crafted value of type Hash r, Mongoid::Criteria.from_hash may allow for executing arbitrary Ruby code.

It is possible to read the advisory at jira.mongodb.org. This vulnerability is known as CVE-2026-2302 since 02/10/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/27/2026).

The vulnerability scanner Nessus provides a plugin with the ID 298776 (Linux Distros Unpatched Vulnerability : CVE-2026-2302), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (298776). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Database Software

Vendor

• MongoDB

Name

• Ruby Driver

Version

• 7.6.0
• 7.6.1
• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3
• 8.0.4
• 8.0.5
• 8.0.6
• 8.0.7
• 8.0.8
• 8.0.9
• 8.0.10
• 8.0.11
• 8.0.12
• 8.1.0
• 8.1.1
• 8.1.2
• 8.1.3
• 8.1.4
• 8.1.5
• 8.1.6
• 8.1.7
• 8.1.8
• 8.1.9
• 8.1.10
• 8.1.11
• 8.1.12
• 9.0.0
• 9.0.1
• 9.0.2
• 9.0.3
• 9.0.4
• 9.0.5
• 9.0.6
• 9.0.7
• 9.0.8
• 9.0.9
• 9.0.10

License

• open-source

CPE 2.3info

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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