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.
Published: 2026-10-19
Score: 4.8 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

The fix applies HTML output encoding (the h() helper) to the parameter name before it is used as a form label, ensuring that any HTML metacharacters in the value are neutralized and rendered as inert text rather than executable markup.

Tracking

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Advisories

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History

Mon, 19 Oct 2026 09:45:00 +0000

Type Values Removed Values Added
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.
Title MISP Workflow Module: Reflected XSS via Unescaped misp-modules Parameter Names in Form Labels
First Time appeared Misp
Misp misp
Weaknesses CWE-79
CPEs cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:*
Vendors & Products Misp
Misp misp
References
Metrics cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: CIRCL

Published:

Updated: 2026-10-19T09:19:45.056Z

Reserved: 2026-10-19T09:19:41.258Z

Link: CVE-2026-112184

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-19T10:16:47.210

Modified: 2026-10-19T10:16:47.313

Link: CVE-2026-112184

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T10:30:13Z

Weaknesses