CVE-2026-95658
Deferred Deferred - Pending Action

CSRF in MISP WorkflowsController moduleStatelessExecution

Publication date: 2026-09-22

Last updated on: 2026-09-22

Assigner: CIRCL

Description
MISP's WorkflowsController exposed the moduleStatelessExecution action in the Security component's unlockedActions list. In CakePHP, listing an action in unlockedActions disables both the CSRF token check and the field hash validation for that action. Because moduleStatelessExecution executes a workflow module's exec() method with caller-supplied input and parameters, the absence of CSRF protection allowed an attacker to craft a cross-site form post (or equivalent cross-origin request) that, when submitted by an authenticated site administrator, would cause the administrator's browser to invoke the action on the MISP instance.  The attacker could select any workflow module to execute, including action modules that write blocklist and warninglist entries, and supply arbitrary input and parameters of their choosing. This constitutes a cross-site request forgery (CSRF) vulnerability with high integrity impact on the MISP instance's security-related data.  The vulnerability was identified during an internal security review and was not externally reported. The fix is included in MISP v2.5.47.

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Meta Information

Published
2026-09-22
Last Modified
2026-09-22
Generated
2026-09-22
AI Q&A
2026-09-22
EPSS Evaluated
N/A
NVD
CVE-2026-95658
EUVD
EUVD-2026-84371

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
misp misp 2.5.47

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-352 The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

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Executive Summary

This vulnerability involves MISP's WorkflowsController exposing the moduleStatelessExecution action without proper CSRF protection. In CakePHP, listing an action in unlockedActions disables CSRF token checks and field hash validation. An attacker could exploit this by tricking an authenticated admin into submitting a crafted form, executing workflow modules with arbitrary input. This allows modifying security-related data like blocklist and warninglist entries.

Detection Guidance

Check MISP version for vulnerability presence. If version is below 2.5.47, the system is likely vulnerable. Inspect network traffic for unauthorized POST requests to /workflows/moduleStatelessExecution without CSRF tokens.

Impact Analysis

If you are an administrator of a MISP instance, an attacker could trick you into executing malicious workflow modules. This could allow them to modify critical security settings, such as adding entries to blocklists or warninglists, potentially compromising the integrity of your threat intelligence data.

Compliance Impact

This vulnerability could impact compliance with GDPR and HIPAA by allowing unauthorized modifications to security-related data. An attacker could exploit the CSRF flaw to alter blocklist and warninglist entries, potentially compromising data integrity and access controls. GDPR requires protecting personal data integrity, while HIPAA mandates strict access controls for sensitive health information. Unauthorized changes could violate these requirements.

Mitigation Strategies

Upgrade MISP to version 2.5.47 or later to apply the fix. Ensure all administrators verify the integrity of blocklist and warninglist entries after upgrade.

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