Server-Side Request Forgery (SSRF) in Flowise - CVE-2025-59527
Published: April 9, 2026
Vulnerability identifier: #VU125539
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-59527
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FlowiseAI
Affected software:
Flowise
Flowise
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to server-side request forgery (SSRF) in the /api/v1/fetch-links endpoint when processing a user-supplied URL with the webCrawl or xmlScrape method. A remote attacker can send a specially crafted request to disclose sensitive information.
The issue can be used to access internal network web services and enumerate internal administrative endpoints.
How to mitigate CVE-2025-59527
Install security update from vendor's website.