MongoDB Python Driver up to 4.18.0 GridFS neutralization

Summaryinfo

A vulnerability was found in MongoDB Python Driver up to 4.18.0 and classified as very critical. Affected by this vulnerability is an unknown functionality of the component GridFS. Such manipulation leads to neutralization. This vulnerability is uniquely identified as CVE-2026-88029. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in MongoDB Python Driver up to 4.18.0. It has been rated as very critical. Affected by this issue is an unknown code of the component GridFS. The manipulation with an unknown input leads to a neutralization vulnerability. Using CWE to declare the problem leads to CWE-707. The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB Python Driver can cause a caller-supplied structured file identifier to be interpreted as a query condition rather than as a literal identifier. An authenticated user who can influence the identifier passed by an affected application may obtain stored file content beyond the intended target or cause all GridFS file chunks in the affected bucket to be removed, rendering stored file content unreadable. The affected rename operation may also rename a stored file other than the intended target.

The advisory is available at jira.mongodb.org. This vulnerability is handled as CVE-2026-88029 since 09/09/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/10/2026).

Upgrading to version 4.18.1 eliminates this vulnerability.

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Productinfo

Type

• Database Software

Vendor

• MongoDB

Name

• Python Driver

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17
• 4.18.0

License

• open-source

CPE 2.3info

• 🔒
• 🔒
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CPE 2.2info

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