CVE-2025-63388: A Cross-Origin Resource Sharing (CORS) misconfiguration vulnerability exists in Dify v1.9.1 in the…
CVE-2025-63388 · Severity: critical · CVSS 9.1 · Published 2025-12-18
A Cross-Origin Resource Sharing (CORS) misconfiguration vulnerability exists in Dify v1.9.1 in the /console/api/system-features endpoint. The endpoint implements an overly permissive CORS policy that reflects arbitrary Origin headers and sets Access-Control-Allow-Credentials: true, allowing any external domain to make authenticated cross-origin requests. NOTE: the Supplier disputes this, providing the rationale of "sending requests with credentials does not provide any additional access compared to unauthenticated requests."
No. Junglewise Threat Intelligence has no report of CVE-2025-63388 being exploited in the wild.
How severe is CVE-2025-63388?
Critical severity, with a CVSS score of 9.1, published 18 December 2025.
Which products and versions are affected?
Langgenius Dify. The advisory does not name versions.
Is there a fix for CVE-2025-63388?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-63388?
Check whether you run Langgenius Dify. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.