parse-community parse-server up to 8.6.20/9.0.0 9.5.2-alpha.7 Query Parameter redirectClassNameForKey authorization

Summaryinfo

A vulnerability marked as critical has been reported in parse-community parse-server up to 8.6.20/9.0.0 9.5.2-alpha.7. The affected element is the function redirectClassNameForKey of the component Query Parameter Handler. Performing a manipulation results in authorization. This vulnerability is known as CVE-2026-30965. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in parse-community parse-server up to 8.6.20/9.0.0 9.5.2-alpha.7. This affects the function redirectClassNameForKey of the component Query Parameter Handler. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.8 and 8.6.21, a vulnerability in Parse Server's query handling allows an authenticated or unauthenticated attacker to exfiltrate session tokens of other users by exploiting the redirectClassNameForKey query parameter. Exfiltrated session tokens can be used to take over user accounts. The vulnerability requires the attacker to be able to create or update an object with a new relation field, which depends on the Class-Level Permissions of at least one class. This vulnerability is fixed in 9.5.2-alpha.8 and 8.6.21.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-30965 since 03/07/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 8.6.21 or 9.0.0 9.5.2-alpha.8 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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

Productinfo

Vendor

• parse-community

Name

• parse-server

Version

• 8.6.0
• 8.6.1
• 8.6.2
• 8.6.3
• 8.6.4
• 8.6.5
• 8.6.6
• 8.6.7
• 8.6.8
• 8.6.9
• 8.6.10
• 8.6.11
• 8.6.12
• 8.6.13
• 8.6.14
• 8.6.15
• 8.6.16
• 8.6.17
• 8.6.18
• 8.6.19
• 8.6.20
• 9.0.0 9.5.2-alpha.0
• 9.0.0 9.5.2-alpha.1
• 9.0.0 9.5.2-alpha.2
• 9.0.0 9.5.2-alpha.3
• 9.0.0 9.5.2-alpha.4
• 9.0.0 9.5.2-alpha.5
• 9.0.0 9.5.2-alpha.6
• 9.0.0 9.5.2-alpha.7

Website

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

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

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

Discussion