OCTOBER 12, 2026
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Case File

CVE-2026-93296

HIGH · CVSS 8.5 EPSS 0.39% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-17 · Last synced 2026-10-12

CyberRota Analysis

AI-Generated

The vulnerability affects the MISP platform's Overmind theme, specifically in the statistics views where user-controlled object names are directly inserted into the HTML without proper encoding, leading to stored cross-site scripting (XSS). This flaw allows authenticated users with permission to create or modify objects to inject malicious scripts, potentially enabling session hijacking, data exfiltration, or unauthorized actions on behalf of victims who view the affected dashboard. Organizations using MISP should prioritize patching this vulnerability to protect against potential exploitation by malicious actors with low-level access.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-93296
Severity
HIGH
CVSS
8.5
EPSS
0.39%
Java

Original NVD Description

MISP contains a stored cross-site scripting (XSS) vulnerability in the Overmind theme's statistics views. The event General card and the server/feed preview card constructed donut chart legend labels by directly concatenating object name or category keys into an innerHTML string without HTML-encoding. Because MISP object names are user-controllable by any authenticated user with sufficient permissions to create or modify such objects, an attacker could craft a name containing malicious markup. When any other user viewed the affected Overmind dashboard, the injected markup would be interpreted as live HTML/JavaScript in the victim's browser, executing in the context of the MISP application origin. This could allow session hijacking, data exfiltration, or arbitrary actions performed on behalf of the victim.  The vulnerability requires the attacker to have low-level authenticated access to create or rename an object whose name is rendered in the legend, and the victim to view the Overmind event or server preview page. No special browser conditions or race conditions are required.