CVE-2025-63388

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-18 · updated 2026-10-13
Weakness: CWE-346

Description

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."

Affected products

langgenius dify: 1.9.1

References

https://gist.github.com/Cristliu/5ded6d03e41d7d66ecb1b568bae3ff6c
https://gist.github.com/Cristliu/c2bc7d05abd89db8eb542a453a528d77
https://github.com/langgenius/dify/discussions

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