CVE-2026-95659 Details
Description
MISP contains a reflected cross-site scripting (XSS) vulnerability in the AnalystDataController::viewForObject action. The method accepted a parent object type parameter from the URL without validation and passed it to the Overmind-themed AnalystData thread view element, where it was interpolated into two translated strings and rendered into the HTML response without output encoding. An authenticated attacker who can induce a victim to navigate to a crafted URL can inject arbitrary JavaScript that executes in the victim's browser within the MISP application context. This may allow the attacker to read session data, manipulate the page, or perform actions on behalf of the victim. The vulnerability requires the victim to be authenticated to MISP and to actively visit the attacker-supplied URL. The affected component is the AnalystData controller and the Overmind theme's AnalystData thread element. Version affected: <2.5.47
A reflected cross-site scripting vulnerability has been identified in MISP versions prior to 2.5.47. The issue resides in the AnalystDataController's viewForObject action, where the parent object type parameter is accepted from the URL without proper validation. This unvalidated input is then passed to the Overmind-themed AnalystData thread view element, where it is interpolated into two translated strings and rendered in the HTML response without appropriate output encoding. An authenticated attacker can exploit this vulnerability by persuading a victim to click on a crafted URL, injecting arbitrary JavaScript that executes in the context of the MISP application within the victim's browser. This could enable the attacker to access session data, manipulate the page, or perform actions on behalf of the victim.
Users can update to MISP version 2.5.47 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 22, 2026CISA-ADP
Assessed Sep 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MISP/MISP/commit/23b879073 | CIRCL | Source CodeVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-116 | Improper Encoding or Escaping of Output | CIRCL |
| CWE-20 | Improper Input Validation | CIRCL |
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | CIRCL |
Affected Products
| Product | Versions |
|---|---|
| MISP | < 2.5.47 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 22, 2026 | CVE Modified | CISA-ADP |
| Sep 22, 2026 | New CVE Received | CIRCL |