CVE-2026-112184 in MISP
Summary
by MITRE • 10/19/2026
MISP contains a reflected cross-site scripting (XSS) vulnerability in the workflow module interface. Parameter names returned by the misp-modules service are rendered as raw HTML form labels on the workflow module page without output encoding. An attacker who can influence the parameter names reported by the misp-modules service can inject arbitrary HTML or JavaScript that executes in the context of an authenticated MISP user's browser.
Preconditions:
- The attacker must be able to control or influence parameter names reported by the misp-modules service.
- A victim must be authenticated and view the affected workflow module page.
Impact:
- Execution of arbitrary JavaScript in the victim's browser session.
- Potential theft of session tokens, manipulation of the MISP interface, or initiation of unauthorized actions on behalf of the victim.
Affected versions: <2.5.48.
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Analysis
by VulDB Data Team • 10/19/2026
The vulnerability identified within the Management Information Sharing Platform (MISP) workflow module represents a classic instance of reflected cross-site scripting, specifically categorized under CWE-79 Improper Neutralization of Input During Web Page Generation. This security flaw arises from a failure to implement proper output encoding when rendering dynamic content generated by external modules. The root cause lies in the interaction between the core MISP application and the misp-modules service, where parameter names returned by these external services are directly injected into HTML form labels without any sanitization or escaping mechanisms. Because modern web browsers interpret unescaped special characters as part of the document structure rather than plain text, an attacker can exploit this behavior to inject malicious scripts that execute within the context of a victim's active session.
The operational mechanics of this vulnerability rely on specific preconditions involving both system configuration and user interaction. For exploitation to succeed, an adversary must possess the ability to control or influence the parameter names reported by the misp-modules service. This typically requires access to modify module configurations or inject custom modules into the MISP instance. Once such a malicious payload is embedded in the parameter metadata, it remains dormant until triggered. The trigger event occurs when an authenticated user navigates to the workflow module interface within the MISP dashboard. Upon loading this page, the browser parses the raw HTML containing the injected script and executes it immediately, granting the attacker code execution privileges equivalent to those of the logged-in user.
The impact of successfully exploiting this reflected cross-site scripting vulnerability is significant for organizations relying on MISP for threat intelligence sharing. Since the malicious JavaScript runs in the context of an authenticated session, attackers can perform a variety of hostile actions against the victim and their organization's data. These actions include stealing sensitive session tokens or authentication cookies, which could allow the attacker to hijack the user's account entirely. Furthermore, the vulnerability enables manipulation of the MISP interface itself, allowing for the alteration of threat intelligence records, creation of false indicators of compromise, or initiation of unauthorized administrative actions. This compromises not only the integrity of individual accounts but also the trustworthiness and accuracy of the shared threat data within the community.
From a tactical perspective, this vulnerability aligns with ATT&CK technique T1059 Command and Scripting Interpreter, specifically JavaScript execution in web browsers, as well as T1078 Valid Accounts for session hijacking scenarios. The exploitation path involves social engineering or direct access to module configurations followed by诱骗 users to visit a crafted URL or page that triggers the reflection of the malicious payload. Defenders should recognize this pattern where dynamic content from external services is rendered without validation, a common pitfall in complex web applications that integrate third-party components.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The primary solution involves upgrading to MISP version 2.5.48 or later, as these versions include patches for the output encoding issue within the workflow module interface. For environments where an upgrade is not immediately feasible, administrators should enforce strict input validation on all parameter names submitted by misp-modules services and implement Content Security Policy headers to restrict inline script execution. Additionally, adopting a defense-in-depth approach that includes regular security audits of custom modules and restricting write access to module configurations can significantly reduce the attack surface. Ensuring that all dynamic content is properly encoded before being rendered in HTML forms is critical to preventing similar reflected XSS vulnerabilities across other parts of the application infrastructure.