CVE-2025-66292 Overview
CVE-2025-66292 is a path traversal vulnerability in DPanel, an open source server management panel written in Go. Prior to version 1.9.2, the /api/common/attach/delete interface is vulnerable to arbitrary file deletion attacks. Authenticated users can exploit improper path sanitization to delete arbitrary files on the server by injecting path traversal sequences (../) into the path parameter.
Critical Impact
Authenticated attackers can delete critical system files or application data, potentially leading to denial of service, data loss, or complete system compromise through deletion of security configurations.
Affected Products
- DPanel versions prior to 1.9.2
- DPanel installations with authenticated user access to the administrative backend
- Server environments running vulnerable DPanel instances
Discovery Timeline
- 2026-01-15 - CVE-2025-66292 published to NVD
- 2026-01-16 - Last updated in NVD database
Technical Details for CVE-2025-66292
Vulnerability Analysis
This vulnerability is classified as CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), commonly known as path traversal. The flaw exists in the file attachment deletion functionality where user-supplied path input is processed without adequate validation or restriction.
The vulnerable code path flows through the Delete function in app/common/http/controller/attach.go. When a user submits a deletion request, the path parameter is passed directly to storage.Local{}.GetSaveRealPath and then to os.Remove without proper sanitization. Although the helper function in common/service/storage/local.go uses Go's filepath.Join, which normalizes paths and resolves ../ sequences, it does not enforce a chroot or jail boundary. This means the resolved path can escape the intended directory structure and target any file accessible to the DPanel process.
Root Cause
The root cause is insufficient input validation on the path parameter in the attachment deletion endpoint. The application fails to:
- Sanitize or reject path traversal characters (../, ..\\)
- Validate that the resolved file path remains within the intended attachment directory
- Implement a proper chroot or jail mechanism to restrict file operations
The use of filepath.Join alone is insufficient for security purposes as it only normalizes the path but does not prevent directory escapes from the base directory.
Attack Vector
The attack is network-based and requires authentication to the DPanel administrative backend. An attacker with valid credentials (even low-privilege) can craft malicious requests to the /api/common/attach/delete endpoint with path traversal sequences to target files outside the intended attachment directory.
The attack flow is straightforward: an authenticated user sends a DELETE or POST request to the vulnerable endpoint with a path parameter containing traversal sequences such as ../../../../etc/critical-config to delete arbitrary files on the system.
package controller
import (
- "fmt"
"log/slog"
"os"
"path/filepath"
Source: GitHub Commit cbda0d90204e8212f2010774345c952e42069119
The security patch modifies the controller to properly validate file paths before deletion operations.
Detection Methods for CVE-2025-66292
Indicators of Compromise
- Unexpected file deletions on systems running DPanel, particularly critical configuration or system files
- HTTP requests to /api/common/attach/delete containing ../ sequences in the path parameter
- Audit logs showing file deletion operations outside the expected attachment directory
- Missing or corrupted application files that were not intentionally removed
Detection Strategies
- Monitor web application logs for requests to /api/common/attach/delete containing path traversal patterns (../, ..%2f, ..%5c)
- Implement file integrity monitoring (FIM) on critical system directories to detect unauthorized deletions
- Deploy web application firewall (WAF) rules to block requests with path traversal sequences
- Review authentication logs for suspicious user activity following successful logins
Monitoring Recommendations
- Enable detailed access logging for all DPanel API endpoints
- Configure alerts for file system operations outside expected directories by the DPanel process
- Implement behavioral analysis to detect anomalous deletion patterns from authenticated sessions
- Monitor for privilege escalation attempts that may precede exploitation
How to Mitigate CVE-2025-66292
Immediate Actions Required
- Upgrade DPanel to version 1.9.2 or later immediately
- Audit DPanel user accounts and remove unnecessary administrative access
- Review file system integrity to identify any unauthorized deletions
- Implement network segmentation to limit access to DPanel administrative interfaces
Patch Information
The vulnerability has been fixed in DPanel version 1.9.2. The patch implements proper path validation to prevent traversal attacks in the attachment deletion functionality.
For detailed information, refer to:
Workarounds
- Restrict network access to DPanel administrative interfaces using firewall rules
- Implement a reverse proxy with path filtering to block requests containing traversal sequences
- Limit DPanel process permissions to minimize the impact of potential file deletions
- Enable read-only mode for non-essential directories accessible by the DPanel service
# Example: Restrict access to DPanel admin interface via iptables
iptables -A INPUT -p tcp --dport 8080 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
