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.
History

Thu, 24 Sep 2026 04:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 22 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Misp
Misp misp
Vendors & Products Misp
Misp misp

Tue, 22 Sep 2026 13:00:00 +0000

Type Values Removed Values Added
Description 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.
Title MISP Reflected Cross-Site Scripting in Attribute Histogram via Unescaped URL-Supplied Type List
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: CIRCL

Published: 2026-09-22T12:54:46.496Z

Updated: 2026-09-22T15:34:06.853Z

Reserved: 2026-09-22T12:54:43.824Z

Link: CVE-2026-95661

cve-icon Vulnrichment

Updated: 2026-09-22T15:34:03.148Z

cve-icon NVD

Status : Deferred

Published: 2026-09-22T13:17:14.050

Modified: 2026-09-22T16:18:19.497

Link: CVE-2026-95661

cve-icon Redhat

No data.