CVE-2026-54359

MISP contains an insecure default configuration in which the Security.check_sec_fetch_site_header control is disabled. When this setting is disabled, state-changing requests such as POST, PUT, or AJAX requests are not restricted based on the browser-provided Sec-Fetch-Site header. A remote unauthenticated attacker could craft a malicious web page that causes an authenticated MISP user’s browser to issue cross-site requests to MISP automation endpoints. If successful, the forged requests may be processed with the privileges of the victim user, potentially allowing unauthorized modification of MISP data or configuration. Enabling Security.check_sec_fetch_site_header mitigates this issue, although operators of multi-homed MISP deployments should validate the setting before enforcing it.

CVSS

No CVSS.

References

Link	Resource
https://github.com/MISP/MISP/commit/b82db1bcaa550689c05e1ed175e81f25a8d97b91

Configurations

No configuration.

History

12 Jun 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-12 20:16

Updated : 2026-06-12 20:16

NVD link : CVE-2026-54359

Mitre link : CVE-2026-54359

CVE.ORG link : CVE-2026-54359

JSON object : View

Products Affected

No product.

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

CWE-1188

Insecure Default Initialization of Resource

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