parse-community parse-server Dot Notation Keys input validation

Summaryinfo

A vulnerability was found in parse-community parse-server. It has been classified as critical. This vulnerability affects unknown code of the component Dot Notation Keys. Performing a manipulation results in input validation. This vulnerability was named CVE-2026-121415. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in parse-community parse-server (unknown version). It has been classified as critical. This affects an unknown code block of the component Dot Notation Keys. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on integrity, and availability. The summary by CVE is:

Parse Server before 8.6.111 and 9.0.0 before 9.10.6-alpha.3 on MongoDB skips field type validation for null-valued dot notation keys, allowing sub-documents to be written beneath Pointer, Number, String, Date, or Boolean fields. Any client with write access, including unauthenticated clients where public writes are permitted, can corrupt field values, make objects unreadable via internal date fields, or break atomic operations on number fields.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-121415 since 11/03/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 11/03/2026).

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

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Productinfo

Vendor

• parse-community

Name

• parse-server

Website

• Product: https://github.com/parse-community/parse-server/

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