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CVE-2026-95661

MISP Reflected Cross-Site Scripting in Attribute Histogram via Unescaped URL-Supplied Type List

CVSS 4.0 5.1 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-95661

Published

MISP contains a reflected cross-site scripting (XSS) vulnerability in the attribute histogram view. The $selectedTypes variable, which is derived from the URL path segment , was interpolated directly into a JavaScript array literal inside an onClick HTML attribute without any encoding or escaping. An attacker who can cause an authenticated MISP user to visit a crafted URL containing a malicious type value can execute arbitrary JavaScript in the victim's browser within the MISP application origin. Successful exploitation allows the attacker to read session cookies, perform actions on behalf of the victim, or exfiltrate sensitive data accessible from the MISP interface. The vulnerability requires the victim to be authenticated and to actively navigate to the attacker-supplied URL.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-95661

Published

MISP

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "modules": [
                        "app/View/Elements/histogram.ctp"
                    ],
                    "product": "MISP",
                    "programFiles": [
                        "app/View/Elements/histogram.ctp"
                    ],
                    "repo": "https://github.com/MISP/MISP",
                    "vendor": "MISP",
                    "versions": [
                        {
                            "lessThan": "2.5.47",
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON