---
id: "CVE-2026-76419"
kind: "vulnerability"
aliases: ["CVE-2026-76419"]
title: "Cisco Unified CM: web interface flaw lets attackers run scripts in browsers"
severity: "medium"
cvss: 6.1
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["cisco", "self-hosted", "unified-cm", "vendor", "voip"]
not_affected_if: ["auth-required"]
published_at: "2026-11-04T17:17:36+00:00"
first_seen_at: "2026-11-04T17:28:12+00:00"
updated_at: "2026-11-04T17:28:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76419", "first_seen_at": "2026-11-04T17:28:12+00:00"}]
---

# Cisco Unified CM: web interface flaw lets attackers run scripts in browsers

The web management interface of Cisco Unified Communications Manager and Unified CM SME does not validate user input properly. An attacker who tricks a user into clicking a crafted link can run script in that user's browser and read browser-based information.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-04T17:28:12+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-76419

## From the sources

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface.

This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_