CVE-2025-13796 Overview
A Server-Side Request Forgery (SSRF) vulnerability has been identified in deco-cx apps versions up to 0.120.1. The vulnerability exists in the AnalyticsScript function within the file website/loaders/analyticsScript.ts, which is part of the Parameter Handler component. By manipulating the url argument, a remote attacker can induce the server to make requests to arbitrary internal or external destinations, potentially exposing sensitive internal services or data.
Critical Impact
Remote attackers can exploit this SSRF vulnerability to bypass network security controls, access internal resources, and potentially pivot to other systems within the network infrastructure.
Affected Products
- deco-cx apps versions up to 0.120.1
- Systems utilizing the AnalyticsScript loader component
- Applications leveraging the vulnerable Parameter Handler functionality
Discovery Timeline
- December 1, 2025 - CVE-2025-13796 published to NVD
- December 1, 2025 - Last updated in NVD database
Technical Details for CVE-2025-13796
Vulnerability Analysis
This vulnerability is classified as CWE-918 (Server-Side Request Forgery). The SSRF flaw allows attackers to abuse the server's ability to make HTTP requests on behalf of the application. The exploit has been publicly disclosed, increasing the urgency for affected organizations to apply patches.
The vulnerability resides in how the AnalyticsScript function processes the url parameter without adequate validation. When an attacker supplies a malicious URL, the server will attempt to fetch resources from that location, potentially accessing internal network resources that should not be externally accessible.
Root Cause
The root cause of this vulnerability is insufficient input validation on the url argument passed to the AnalyticsScript function in website/loaders/analyticsScript.ts. The application fails to properly sanitize or restrict the URLs that can be requested, allowing attackers to specify arbitrary destinations including internal IP addresses, localhost services, and cloud metadata endpoints.
Attack Vector
The attack can be executed remotely over the network. An authenticated attacker with low privileges can exploit this vulnerability by manipulating the url parameter to target internal services. The exploitation requires no user interaction and can result in unauthorized access to confidential data, modification of internal resources, or disruption of internal services.
Typical SSRF exploitation scenarios include:
- Accessing internal services on localhost or 127.0.0.1
- Querying cloud provider metadata services (e.g., 169.254.169.254)
- Port scanning internal network infrastructure
- Bypassing firewall restrictions to access restricted endpoints
For technical implementation details, refer to the GitHub Pull Request #1360 which contains the security fix.
Detection Methods for CVE-2025-13796
Indicators of Compromise
- Unusual outbound requests from the application server to internal IP ranges (10.x.x.x, 172.16.x.x, 192.168.x.x)
- HTTP requests targeting localhost (127.0.0.1) or cloud metadata endpoints (169.254.169.254)
- Anomalous patterns in analytics-related API endpoints with suspicious URL parameters
- Server-side requests to unexpected external domains or IP addresses
Detection Strategies
- Monitor application logs for requests containing internal IP addresses or localhost references in the url parameter
- Implement network-level monitoring to detect outbound connections from the web application tier to internal services
- Deploy web application firewall (WAF) rules to inspect and block SSRF attack patterns in request parameters
- Utilize SentinelOne Singularity platform to detect anomalous network behavior and process execution patterns
Monitoring Recommendations
- Enable verbose logging for the analyticsScript.ts component to capture all URL parameter values
- Configure alerts for any requests to RFC 1918 private IP address ranges from the application
- Monitor DNS queries from the application server for suspicious internal hostname lookups
- Review application access logs for repeated requests with varying URL parameter values indicative of enumeration attempts
How to Mitigate CVE-2025-13796
Immediate Actions Required
- Upgrade deco-cx apps to version 0.120.2 or later immediately
- Review application logs for evidence of exploitation attempts targeting the analytics endpoint
- Implement network segmentation to limit the blast radius of potential SSRF attacks
- Deploy URL validation and allowlist controls at the application level
Patch Information
The vendor has addressed this vulnerability in version 0.120.2. Organizations should upgrade to this version or later to remediate the SSRF vulnerability. The fix is available in the GitHub Release 0.120.2. Additional technical details about the patch can be found in the GitHub Pull Request #1360.
Workarounds
- Implement strict URL validation to only allow requests to explicitly approved external domains
- Deploy network-level controls to prevent the application server from initiating connections to internal IP ranges
- Use a proxy server for all outbound requests with strict URL filtering and logging capabilities
- Consider disabling or restricting access to the AnalyticsScript functionality until patching is complete
# Example: Block internal IP ranges at the network level (iptables)
# Prevent application from accessing internal networks via SSRF
iptables -A OUTPUT -m owner --uid-owner www-data -d 10.0.0.0/8 -j DROP
iptables -A OUTPUT -m owner --uid-owner www-data -d 172.16.0.0/12 -j DROP
iptables -A OUTPUT -m owner --uid-owner www-data -d 192.168.0.0/16 -j DROP
iptables -A OUTPUT -m owner --uid-owner www-data -d 169.254.169.254 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
