labring FastGPT up to 4.9.11 LastRoute cross site scripting

Summaryinfo

A vulnerability was found in labring FastGPT up to 4.9.11. It has been rated as problematic. Affected is an unknown function. The manipulation of the argument LastRoute leads to cross site scripting. This vulnerability is referenced as CVE-2025-52552. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in labring FastGPT up to 4.9.11 and classified as problematic. This issue affects an unknown function. The manipulation of the argument LastRoute with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

FastGPT is an AI Agent building platform. Prior to version 4.9.12, the LastRoute Parameter on login page is vulnerable to open redirect and DOM-based XSS. Improper validation and lack of sanitization of this parameter allows attackers execute malicious JavaScript or redirect them to attacker-controlled sites. This issue has been patched in version 4.9.12.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-52552 since 06/18/2025. 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. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 4.9.12 eliminates this vulnerability. Applying the patch 095b75ee27746004106eddeaa4840688a61ff6eb 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 vulnerability database at EUVD (EUVD-2025-18916). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• labring

Name

• FastGPT

Version

• 4.9.0
• 4.9.1
• 4.9.2
• 4.9.3
• 4.9.4
• 4.9.5
• 4.9.6
• 4.9.7
• 4.9.8
• 4.9.9
• 4.9.10
• 4.9.11

License

• open-source

Website

• Product: https://github.com/labring/FastGPT/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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