Medium severity · published Jun 21, 2025
CVE-2025-52552
FastGPT LastRoute Parameter on Login Page Vulnerable to Open Redirect and DOM-based XSS
6.1
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FA
FastGPT · labring
< 4.9.12 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-52552
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-52552
Patch
https://github.com/labring/FastGPT/commit/095b75ee27746004106eddeaa4840688a61ff6eb
Exploit
https://github.com/labring/FastGPT/security/advisories/GHSA-r976-rfrv-q24m
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