CVE-2024-3116: pgAdmin 4 RCE Vulnerability

CVE-2024-3116 Overview

CVE-2024-3116 is a remote code execution (RCE) vulnerability affecting pgAdmin versions 8.4 and earlier. The flaw exists in the validate binary path API endpoint, which fails to properly sanitize user-supplied input before passing it to system execution routines. An attacker who can reach the pgAdmin web interface can abuse this endpoint to execute arbitrary commands on the host operating system. Because pgAdmin is the most widely deployed administration tool for PostgreSQL, successful exploitation places both the management server and connected database instances at risk. The vulnerability is tracked under [CWE-77] (Improper Neutralization of Special Elements used in a Command).

Critical Impact

Unauthenticated network-based attackers can execute arbitrary code on servers running pgAdmin 8.4 or earlier, compromising PostgreSQL administration hosts and connected databases.

Affected Products

• pgAdmin 4 versions up to and including 8.4 (pgadmin:pgadmin_4)
• Fedora 39 distributions shipping vulnerable pgAdmin packages (fedoraproject:fedora:39)
• PostgreSQL environments managed through vulnerable pgAdmin installations

Discovery Timeline

• 2024-04-04 - CVE-2024-3116 published to the National Vulnerability Database
• 2025-03-17 - Last updated in NVD database

Technical Details for CVE-2024-3116

Vulnerability Analysis

The vulnerability resides in the binary path validation API exposed by pgAdmin. This endpoint accepts a file path parameter that pgAdmin uses to locate PostgreSQL binaries such as pg_dump and pg_restore. The handler invokes the supplied path through a shell-aware execution routine without enforcing strict allow-list validation or escaping shell metacharacters. As a result, an attacker can append additional commands to the input and have them executed in the context of the pgAdmin process. Because the endpoint is reachable over the network and does not require prior authentication in vulnerable configurations, the attack surface extends to any pgAdmin instance exposed to untrusted networks.

Root Cause

The root cause is improper neutralization of special elements passed to a command interpreter [CWE-77]. The validate binary path API trusts caller-controlled file path data and forwards it to an OS execution function. Shell metacharacters such as ;, &&, and backticks are not stripped or escaped, so the underlying shell interprets injected payloads as separate commands.

Attack Vector

Exploitation requires network access to the pgAdmin web interface. An attacker sends a crafted HTTP request to the binary path validation endpoint containing a payload that combines a valid-looking path with shell command separators. The pgAdmin backend processes the request and executes the appended commands with the privileges of the pgAdmin service account. A public proof-of-concept demonstrating the request format is referenced in the GitHub Gist PoC Script and discussed in the GitHub Issue Discussion. Additional analysis is available in the Vicarius Blog Post on CVE-2024-3116. The EPSS score for this CVE indicates a high probability of exploitation activity in the wild.

Detection Methods for CVE-2024-3116

Indicators of Compromise

• HTTP POST requests to pgAdmin endpoints containing the string validate_binary_path with shell metacharacters such as ;, |, &&, or backticks in the payload
• Unexpected child processes spawned by the pgAdmin Python process (python, pgadmin4), including shells such as /bin/sh, bash, or cmd.exe
• Outbound network connections initiated by the pgAdmin process to unfamiliar IP addresses shortly after API calls
• New files written to pgAdmin installation directories or web-accessible paths following requests to the binary path endpoint

Detection Strategies

• Monitor pgAdmin web server access logs for requests targeting the binary path validation API with non-standard characters in path parameters
• Apply process ancestry rules that flag command interpreters launched by the pgAdmin service account
• Correlate web request logs with endpoint process telemetry to identify request-to-execution chains indicative of command injection

Monitoring Recommendations

• Forward pgAdmin application logs and host process telemetry to a centralized logging platform for retrospective hunting
• Alert on any execution of system utilities such as curl, wget, nc, whoami, or id originating from the pgAdmin process tree
• Track outbound connections from pgAdmin hosts and baseline normal behavior so anomalous destinations trigger review

How to Mitigate CVE-2024-3116

Immediate Actions Required

• Upgrade pgAdmin to version 8.5 or later, which addresses the binary path validation flaw
• Restrict network access to the pgAdmin web interface so it is reachable only from trusted administrative networks or via VPN
• Audit pgAdmin hosts for signs of prior exploitation, including unexpected processes, scheduled tasks, and outbound connections
• Rotate database credentials and any secrets stored in pgAdmin configuration if compromise is suspected

Patch Information

The pgAdmin development team released a fixed version following responsible disclosure. Fedora users should apply updates referenced in the Fedora Package Announcement. Track upstream fixes through the GitHub Issue Discussion on the pgadmin4 repository.

Workarounds

• Place pgAdmin behind an authenticating reverse proxy that enforces strong authentication and IP allow-listing
• Run pgAdmin under a low-privilege service account that cannot access sensitive files or escalate locally
• Disable or block access to the binary path validation endpoint at the web server or WAF layer until patching is complete
• Apply web application firewall rules that reject requests containing shell metacharacters in pgAdmin API parameters

# Example NGINX configuration to restrict pgAdmin to a trusted management subnet
location /pgadmin4/ {
    allow 10.10.20.0/24;
    deny all;
    proxy_pass http://127.0.0.1:5050/;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
}