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Vulnerability record · CVE-2025-63386 · published 18 December 2025

CVE-2025-63386: Langgenius dify origin validation error vulnerability

LLanggenius · Dify

A Cross-Origin Resource Sharing (CORS) misconfiguration vulnerability exists in Dify v1.9.1 in the /console/api/setup endpoint. The endpoint implements an insecure CORS policy that reflects any Origin header and enables Access-Control-Allow-Credentials: true, permitting arbitrary external domains to make authenticated requests. NOTE: the Supplier disputes this because the endpoint configuration is intentional to support bootstrap.

9.1 CVSS 3.1 Critical EPSS 0.24% · top 86.7% CWE-346 · Origin validation error
9.1CVSS 3.1 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A Cross-Origin Resource Sharing (CORS) misconfiguration vulnerability exists in Dify v1.9.1 in the /console/api/setup endpoint. The endpoint implements an insecure CORS policy that reflects any Origin header and enables Access-Control-Allow-Credentials: true, permitting arbitrary external domains to make authenticated requests. NOTE: the Supplier disputes this because the endpoint configuration is intentional to support bootstrap.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/Cristliu/1610daac87c711ac3e0250c58f5cc4f9 Third Party Advisory
https://gist.github.com/Cristliu/8ad993126be05c9210c71cc7d49fa112
https://github.com/langgenius/dify/discussions Issue Tracking
https://github.com/langgenius/dify/pull/32224

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Source: NIST National Vulnerability Database (record CVE-2025-63386), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.