CVE-2025-52552

MEDIUM

fastgpt < 4.9.12 - Open Redirect and DOM-based Cross-Site Scripting via LastRoute Parameter

Title source: llm
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 6.1
EPSS 0.0023
EPSS Percentile 14.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-601 CWE-79
Status published
Products (1)
fastgpt/fastgpt < 4.9.12
Published Jun 21, 2025
Tracked Since Feb 18, 2026