lunary-ai lunary up to 1.9.34 Google OAuth improper authentication

Summaryinfo

A vulnerability was found in lunary-ai lunary up to 1.9.34 and classified as critical. The impacted element is an unknown function of the component Google OAuth. Such manipulation leads to improper authentication. This vulnerability is listed as CVE-2025-9803. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in lunary-ai lunary up to 1.9.34 and classified as critical. Affected by this issue is an unknown code of the component Google OAuth. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. CVE summarizes:

lunary-ai/lunary version 1.9.34 is vulnerable to an account takeover due to improper authentication in the Google OAuth integration. The application fails to verify the 'aud' (audience) field in the access token issued by Google, which is crucial for ensuring the token is intended for the application. This oversight allows attackers to use tokens issued to malicious applications to gain unauthorized access to user accounts. The issue is resolved in version 1.9.35.

The advisory is shared for download at huntr.com. This vulnerability is handled as CVE-2025-9803 since 09/01/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.9.35 eliminates this vulnerability. Applying the patch 95a2cc8e012bf5f089edbfa072ba66dcb7e10d91 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202511-2812) and EUVD (EUVD-2025-199529). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Artificial Intelligence Software

Vendor

• lunary-ai

Name

• lunary

Version

• 1.9.0
• 1.9.1
• 1.9.2
• 1.9.3
• 1.9.4
• 1.9.5
• 1.9.6
• 1.9.7
• 1.9.8
• 1.9.9
• 1.9.10
• 1.9.11
• 1.9.12
• 1.9.13
• 1.9.14
• 1.9.15
• 1.9.16
• 1.9.17
• 1.9.18
• 1.9.19
• 1.9.20
• 1.9.21
• 1.9.22
• 1.9.23
• 1.9.24
• 1.9.25
• 1.9.26
• 1.9.27
• 1.9.28
• 1.9.29
• 1.9.30
• 1.9.31
• 1.9.32
• 1.9.33
• 1.9.34

License

• open-source

Website

• Product: https://github.com/lunary-ai/lunary/

CPE 2.3info

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Once again VulDB remains the best source for vulnerability data.

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