CVE-2026-95658: MISP CSRF vulnerability in workflow moduleStatelessExecution allows cross-site execution of workflow modules
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
MISPto a version that resolves this vulnerability.Fixed in v2.5.47
Event History
Frequently Asked Questions
Who is realistically exposed to exploitation?
MISP instances where an authenticated site administrator can be induced to submit an attacker-controlled cross-site request are exposed. The attack is performed through the administrator's browser and affects the MISP instance they are authenticated to.
What does an attacker need to exploit this issue?
The attacker needs to cause an authenticated site administrator to submit a crafted cross-site form post or equivalent cross-origin request. They can then choose a workflow module and provide arbitrary input and parameters to its exec() method.
What is the potential impact of a successful attack?
An attacker can cause execution of workflow modules under the administrator's authenticated session, including action modules that write blocklist and warninglist entries. This can alter security-related data on the MISP instance.
Which versions contain the fix?
The fix is included in MISP v2.5.47.