CVE-2026-41468: Beghelli Sicuro24 SicuroWeb RCE Vulnerability

CVE-2026-41468 Overview

Beghelli Sicuro24 SicuroWeb embeds AngularJS 1.5.2, an end-of-life component containing known sandbox escape primitives. When combined with template injection present in the same application, these primitives allow attackers to escape the AngularJS sandbox and achieve arbitrary JavaScript execution in operator browser sessions, enabling session hijacking, DOM manipulation, and persistent browser compromise. Network-adjacent attackers can deliver the complete injection and escape chain via MITM in plaintext HTTP deployments without active user interaction.

Critical Impact

This vulnerability enables arbitrary JavaScript execution through AngularJS sandbox escape, allowing session hijacking, DOM manipulation, and persistent browser compromise via adjacent network attacks.

Affected Products

• Beghelli Sicuro24 SicuroWeb (with embedded AngularJS 1.5.2)
• Systems using plaintext HTTP deployments of SicuroWeb
• Network environments where adjacent attackers can perform MITM attacks

Discovery Timeline

• April 22, 2026 - CVE CVE-2026-41468 published to NVD
• April 22, 2026 - Last updated in NVD database

Technical Details for CVE-2026-41468

Vulnerability Analysis

This vulnerability stems from the use of AngularJS version 1.5.2, which reached end-of-life status and contains well-documented sandbox escape vulnerabilities. AngularJS versions prior to 1.6 implemented a sandbox mechanism intended to restrict the execution of arbitrary JavaScript within AngularJS expressions. However, multiple sandbox escape techniques have been publicly disclosed for these versions.

The Beghelli Sicuro24 SicuroWeb application compounds this risk by exposing a template injection vulnerability that allows attackers to inject malicious AngularJS expressions. When these two weaknesses are chained together, an attacker can craft payloads that first exploit the template injection to insert AngularJS expressions, then leverage known sandbox escape primitives to execute arbitrary JavaScript code within the context of an authenticated operator's browser session.

The attack surface is particularly dangerous in deployments using plaintext HTTP, as network-adjacent attackers can intercept and modify traffic via man-in-the-middle attacks to inject the malicious payload without requiring any direct user interaction beyond normal application usage.

Root Cause

The root cause of this vulnerability is classified under CWE-1104 (Use of Unmaintained Third Party Components). Beghelli Sicuro24 SicuroWeb embeds an outdated, end-of-life version of AngularJS (1.5.2) that contains known security vulnerabilities, specifically sandbox escape primitives. The combination of this unmaintained component with a template injection flaw in the application creates a critical attack chain. The AngularJS sandbox was never intended to be a security boundary and was officially removed in AngularJS 1.6, as the project maintainers acknowledged it provided insufficient security guarantees.

Attack Vector

The attack is delivered via adjacent network access, requiring the attacker to be on the same network segment as the victim. In plaintext HTTP deployments, a network-adjacent attacker can perform a man-in-the-middle attack to intercept and modify HTTP responses, injecting malicious AngularJS template expressions into the SicuroWeb application. The injected payload exploits the template injection vulnerability and chains it with AngularJS sandbox escape techniques to achieve arbitrary JavaScript execution.

Once JavaScript execution is achieved in the victim's browser, the attacker can hijack operator sessions by stealing authentication tokens or cookies, manipulate the DOM to display false information or capture user input, and establish persistent browser compromise through techniques like service worker injection or localStorage manipulation.

For additional technical details on the exploitation chain, refer to the BoffSec Blog Post and the VulnCheck Security Advisory.

Detection Methods for CVE-2026-41468

Indicators of Compromise

• Unusual AngularJS expression patterns in HTTP request parameters or response bodies, particularly those containing constructor chains like constructor.constructor('code')()
• JavaScript errors in browser console logs related to AngularJS expression evaluation failures indicating potential exploit attempts
• Unexpected DOM modifications or injected script elements in SicuroWeb pages
• Session token exfiltration attempts to external domains from client browsers accessing SicuroWeb

Detection Strategies

• Implement network traffic analysis to detect plaintext HTTP communications to SicuroWeb instances that should be using HTTPS
• Deploy web application firewall (WAF) rules to detect and block common AngularJS sandbox escape payloads in request parameters
• Monitor for MITM attack indicators on network segments where SicuroWeb is deployed, including ARP spoofing and DNS hijacking attempts
• Utilize browser-based detection mechanisms to identify suspicious JavaScript execution patterns characteristic of sandbox escape attempts

Monitoring Recommendations

• Enable detailed logging on SicuroWeb instances to capture all incoming requests with full parameter data for forensic analysis
• Implement network intrusion detection systems (IDS) to monitor for ARP spoofing and other MITM attack precursors on segments hosting SicuroWeb
• Deploy endpoint detection and response (EDR) solutions on operator workstations to detect post-exploitation activities such as credential theft or persistence mechanisms
• Establish baseline behavior monitoring for SicuroWeb operator sessions to detect anomalous activities indicative of session hijacking

How to Mitigate CVE-2026-41468

Immediate Actions Required

• Enforce HTTPS with valid TLS certificates for all SicuroWeb deployments to prevent MITM-based payload injection
• Implement network segmentation to isolate SicuroWeb instances from untrusted network segments and reduce adjacent network attack surface
• Deploy Content Security Policy (CSP) headers with strict directives to limit inline script execution and mitigate the impact of successful JavaScript injection
• Consider temporarily restricting access to SicuroWeb to trusted, hardened endpoints until a vendor patch is available

Patch Information

As of the last update on April 22, 2026, no vendor patch has been confirmed for this vulnerability. Organizations should monitor the Beghelli Official Website for security updates and contact Beghelli support to inquire about remediation timelines. Given the use of an end-of-life AngularJS component, a comprehensive fix would require upgrading to a supported JavaScript framework.

Workarounds

• Migrate SicuroWeb deployments from HTTP to HTTPS with HSTS enforcement to eliminate the primary MITM attack vector
• Implement a reverse proxy with Web Application Firewall (WAF) capabilities to filter known AngularJS sandbox escape payloads before they reach the application
• Restrict network access to SicuroWeb using VLAN segmentation or firewall rules to limit exposure to adjacent network attackers
• Consider deploying browser isolation solutions for operators accessing SicuroWeb to contain potential JavaScript execution within sandboxed environments

# Example: Enforce HTTPS redirect via nginx reverse proxy
server {
    listen 80;
    server_name sicuroweb.example.com;
    return 301 https://$server_name$request_uri;
}

server {
    listen 443 ssl http2;
    server_name sicuroweb.example.com;
    
    # TLS Configuration
    ssl_certificate /etc/nginx/ssl/sicuroweb.crt;
    ssl_certificate_key /etc/nginx/ssl/sicuroweb.key;
    
    # Security Headers
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline';" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    
    location / {
        proxy_pass http://localhost:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }
}