MongoDB Compass up to 1.49.5 prototype pollution

Summaryinfo

A vulnerability marked as problematic has been reported in MongoDB Compass. This issue affects some unknown processing. The manipulation leads to prototype pollution. This vulnerability is uniquely identified as CVE-2026-9101. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in MongoDB Compass. This issue affects an unknown code. The manipulation with an unknown input leads to a prototype pollution vulnerability. Using CWE to declare the problem leads to CWE-1321. The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. Impacted is integrity. The summary by CVE is:

Prototype pollution in csv parsing logic during import can lead to untrusted file paths (but not arguments) entering shell.openExternal after specific user behavior leading to "1-click" command execution.

It is possible to read the advisory at jira.mongodb.org. The identification of this vulnerability is CVE-2026-9101 since 05/20/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/23/2026). The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 321524 (MongoDB Compass < 1.49.6 Prototype Pollution), 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 databases at Tenable (321524) and CERT Bund (WID-SEC-2026-1617). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• Open Source MongoDB Compass

Productinfo

Type

• Database Software

Vendor

• MongoDB

Name

• Compass

Version

• 1.36.3
• 1.36.4
• 1.37.0
• 1.38.0
• 1.38.1
• 1.38.2
• 1.39.0
• 1.39.1
• 1.39.2
• 1.39.3
• 1.39.4
• 1.40.0
• 1.40.1
• 1.40.2
• 1.40.3
• 1.40.4
• 1.41.0
• 1.42.0
• 1.42.1
• 1.42.2
• 1.42.3
• 1.42.5
• 1.43.0
• 1.43.1
• 1.43.2
• 1.43.3
• 1.43.4
• 1.43.5
• 1.43.6
• 1.44.0
• 1.44.3
• 1.44.4
• 1.44.5
• 1.44.6
• 1.44.7
• 1.45.0
• 1.45.1
• 1.45.2
• 1.45.3
• 1.45.4
• 1.46.0
• 1.46.1
• 1.46.2
• 1.46.3
• 1.46.4
• 1.46.5
• 1.46.6
• 1.46.7
• 1.46.8
• 1.46.9
• 1.46.10
• 1.46.11
• 1.47.0
• 1.47.1
• 1.48.0
• 1.48.1
• 1.48.2
• 1.49.0
• 1.49.1
• 1.49.2
• 1.49.3
• 1.49.4
• 1.49.5

License

• open-source

CPE 2.3info

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CPE 2.2info

• 🔒
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Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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