CVE-2026-112184 MISP Workflow Module: Reflected XSS via Unescaped misp-modules Parameter Names in Form Labels
Reflected XSS in MISP workflow module allows attackers to execute JavaScript in authenticated users' browsers via unescaped parameter names.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-112184?
CVE-2026-112184 is a medium-severity cross-site scripting vulnerability in MISP, published on 19 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-112184?
How do I fix CVE-2026-112184?
No fix has been published for CVE-2026-112184 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-112184 being exploited?
There is no known exploitation of CVE-2026-112184 in the wild and no public exploit code.
Sources
Also known as GHSA-4j43-fg42-frxx.