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How CVE-2025-4022 Works
The vulnerability resides in the `HTMLContentEvaluator` function within webarena/evaluation_harness/evaluators.py. Attackers can exploit improper input sanitization of the `target[“url”]` parameter, leading to remote code execution (RCE). By injecting malicious payloads into the URL field, an attacker can execute arbitrary commands on the server. The flaw stems from unsafe evaluation of user-supplied input, allowing attackers to bypass security checks and manipulate server-side processes.
DailyCVE Form
Platform: Web-Arena-X
Version: <= 0.2.0
Vulnerability: Code Injection
Severity: Critical
Date: 05/14/2025
What Undercode Say:
Exploitation:
1. Payload Injection:
target = {"url": "javascript:alert(1);"}
2. Remote Execution:
curl -X POST "http://victim.com/eval" --data '{"url":"malicious-code"}'
Mitigation:
1. Input Sanitization:
import re safe_url = re.sub(r"[^a-zA-Z0-9:/.]", "", target["url"])
2. Patch Update:
pip install --upgrade web-arena-x
Detection:
1. Log Analysis:
grep -r "eval(" /var/log/webarena
2. Network Monitoring:
tcpdump -i eth0 'port 80 and contains "eval"'
Hardening:
1. Disable Dangerous Functions:
os.environ["PYTHONUNBUFFERED"] = "1"
2. WAF Rules:
location /eval {
deny all;
}
Forensics:
1. Memory Dump:
gcore -o /tmp/webarena_dump <PID>
2. Exploit Artifacts:
strings /tmp/webarena_dump | grep "malicious"
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
