CVE-2026-7271 Overview
A path traversal vulnerability has been identified in DV0x creative-ad-agent, affecting the server/sdk-server.ts component of the creative-ad-agent-server. The vulnerability allows remote attackers to manipulate the req.params argument to traverse directories and potentially access files outside of the intended directory structure. This flaw enables unauthorized file access through crafted requests that exploit insufficient path validation.
Critical Impact
Remote attackers can exploit this path traversal vulnerability to read sensitive files from the server filesystem, potentially exposing configuration data, credentials, or other sensitive information stored on the affected system.
Affected Products
- DV0x creative-ad-agent (up to commit 751b9e5146604dc65049bd0f62dcbdad6212f8a3)
- creative-ad-agent-server component
- Applications using the vulnerable server/sdk-server.ts module
Discovery Timeline
- 2026-04-28 - CVE-2026-7271 published to NVD
- 2026-04-28 - Last updated in NVD database
Technical Details for CVE-2026-7271
Vulnerability Analysis
This vulnerability is classified as CWE-22 (Path Traversal), which occurs when the application uses external input to construct a pathname intended to identify a file or directory located beneath a restricted parent directory. The vulnerable component in server/sdk-server.ts fails to properly sanitize or validate the req.params input before using it to construct file paths.
Path traversal attacks typically exploit the ability to use special character sequences such as ../ (dot-dot-slash) to escape the intended directory context. When user-controlled input is directly incorporated into file path operations without adequate validation, attackers can navigate the directory hierarchy to access arbitrary files on the system.
The vulnerability is remotely exploitable over the network without authentication, making it accessible to any attacker with network access to the vulnerable server. The exploit has been publicly disclosed, increasing the risk of active exploitation.
Root Cause
The root cause of this vulnerability lies in insufficient input validation within the server/sdk-server.ts file. The req.params argument is directly used in file path construction without proper sanitization to remove or neutralize path traversal sequences. This allows attackers to inject directory traversal sequences that bypass the intended file access restrictions.
Attack Vector
The attack vector is network-based, allowing remote exploitation without requiring authentication or user interaction. An attacker can send specially crafted HTTP requests to the creative-ad-agent-server with manipulated path parameters containing directory traversal sequences such as ../ to access files outside the intended directory scope.
The vulnerability allows attackers to read files from the server's filesystem. Depending on the server configuration and the files accessible, this could lead to exposure of sensitive configuration files, application source code, user data, or system credentials.
Detection Methods for CVE-2026-7271
Indicators of Compromise
- HTTP request logs containing path traversal sequences such as ../, ..%2f, or ..%5c in URL parameters
- Unusual file access patterns targeting files outside the application's web root directory
- Access attempts to sensitive system files like /etc/passwd, configuration files, or environment files
- Error logs indicating file access attempts outside expected directories
Detection Strategies
- Implement web application firewall (WAF) rules to detect and block requests containing path traversal patterns
- Monitor server access logs for suspicious patterns in request parameters, particularly sequences like ../ or URL-encoded variants
- Deploy file integrity monitoring on sensitive directories to detect unauthorized access attempts
- Use intrusion detection systems (IDS) with signatures for path traversal attack patterns
Monitoring Recommendations
- Enable detailed logging for file access operations in the creative-ad-agent-server
- Set up alerts for requests targeting the vulnerable sdk-server.ts endpoint with suspicious parameters
- Monitor for unusual network traffic patterns targeting the creative-ad-agent service
- Review application logs for file-not-found errors that may indicate path traversal probing attempts
How to Mitigate CVE-2026-7271
Immediate Actions Required
- Apply the security patch by updating to commit 3d255865a957f3740b8724dd914502c0f44d4970 or later
- Review access logs for signs of exploitation attempts before patching
- Implement network-level access controls to restrict access to the creative-ad-agent-server if immediate patching is not possible
- Consider temporarily disabling the affected endpoint if the service is not critical
Patch Information
The vulnerability has been addressed in patch commit 3d255865a957f3740b8724dd914502c0f44d4970. This fix is available in the GitHub repository. Since DV0x creative-ad-agent follows a rolling release model for continuous delivery, users should update to the latest version containing this commit to remediate the vulnerability.
Additional technical details can be found in the GitHub Issue Tracker and the VulDB Vulnerability Listing.
Workarounds
- Implement input validation at the application or web server level to reject requests containing path traversal sequences
- Configure web application firewall rules to block requests with ../, ..%2f, ..%5c, and other path traversal patterns
- Restrict the server process permissions using chroot or containerization to limit file access scope
- Deploy the application behind a reverse proxy with URL normalization and path validation capabilities
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
