CVE-2025-63387
Published: 18 December 2025
Summary
CVE-2025-63387 is a high-severity Improper Access Control (CWE-284) vulnerability in Langgenius Dify. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 6.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
This vulnerability is AI-related — categorised as LLM Application Platforms; in the Supply Chain and Deployment risk domain.
Deeper analysis
Dify v1.9.1 contains an insecure permissions vulnerability in the /console/api/system-features endpoint. The component fails to enforce authorization checks, permitting direct unauthenticated HTTP GET requests that return system configuration data. The issue is tracked as CWE-284 with a CVSS 3.1 score of 7.5 reflecting network attack vector, no required credentials, and high confidentiality impact.
An unauthenticated remote attacker can exploit the flaw simply by issuing the GET request without credentials or session tokens, thereby retrieving the endpoint contents. Although the maintainer asserts the endpoint is intentionally unauthenticated for dashboard bootstrap purposes and that the returned data is non-sensitive client-side rendering information containing no PII, credentials, or secrets, the reported behavior still bypasses expected access controls.
Public references, including GitHub discussions, issue 31368, and pull request 31392, document the maintainer's position that the endpoint behavior is by design and that the vulnerability description overstates the sensitivity of the exposed data.
The associated EPSS score rose from a lower baseline to a peak of 0.1671, indicating that exploitation interest emerged after disclosure and that the CVE warrants renewed attention.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-204368
Vulnerability details
Dify v1.9.1 is vulnerable to Insecure Permissions. An unauthenticated attacker can directly send HTTP GET requests to the /console/api/system-features endpoint without any authentication credentials or session tokens. The endpoint fails to implement proper authorization checks, allowing anonymous access to sensitive…
more
system configuration data. NOTE: The maintainer states that the endpoint is unauthenticated by design and serves as a bootstrap mechanism required for the dashboard initialization. They also state that the description inaccurately classifies the returned data as sensitive system configuration, stating that the data is non-sensitive and required for client-side rendering. No PII, credentials, or secrets are exposed.
- CWE(s)
AI Security AnalysisAI
- AI Category
- LLM Application Platforms
- Risk Domain
- Supply Chain and Deployment
- OWASP Top 10 for LLMs 2025
- None mapped
- Classification Reason
- Matched keywords: dify
Related Threats
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.
By automatically labeling outputs with security attributes, the control supports attribute-based enforcement and reduces exploitability of improper access control weaknesses.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
Requiring prior authorization for each remote access type prevents improper access control over remote connections.
Requiring authorization of wireless access before allowing connections enforces proper access control for this access method.