CVE-2025-4022 in webarena
Summary
by MITRE • 04/28/2025
A vulnerability was found in web-arena-x webarena up to 0.2.0. It has been declared as critical. This vulnerability affects the function HTMLContentEvaluator of the file webarena/evaluation_harness/evaluators.py. The manipulation of the argument target["url"] leads to code injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 05/15/2025
The vulnerability identified as CVE-2025-4022 represents a critical code injection flaw within the web-arena-x webarena framework version 0.2.0 and earlier. This issue resides in the HTMLContentEvaluator function located within the webarena/evaluation_harness/evaluators.py file, making it a significant security risk for any system utilizing this evaluation framework. The flaw manifests when an attacker manipulates the target["url"] argument, which then gets processed in a manner that allows arbitrary code execution. This type of vulnerability falls under CWE-94, which specifically addresses "Improper Control of Generation of Code" and represents one of the most dangerous categories of software vulnerabilities due to its potential for remote code execution.
The technical implementation of this vulnerability exploits the insecure handling of user-supplied URL parameters within the evaluation harness. When the HTMLContentEvaluator processes the target["url"] argument, it fails to properly sanitize or validate the input before incorporating it into the evaluation process. This allows an attacker to inject malicious code that gets executed within the context of the evaluation framework, potentially enabling full system compromise. The remote exploitation capability means that an attacker does not need physical access to the system, making this vulnerability particularly dangerous in networked environments where the framework might be exposed to untrusted inputs.
The operational impact of this vulnerability extends beyond simple code injection, as it can lead to complete system compromise and data exfiltration. Attackers could leverage this flaw to execute arbitrary commands on the server running the webarena framework, potentially gaining access to sensitive evaluation data, system resources, or even escalating privileges to gain root access. The disclosure of exploitation techniques increases the risk significantly, as security teams must now contend with active exploitation attempts rather than theoretical threats. This vulnerability represents a serious threat to any organization relying on automated web evaluation processes that might be exposed to external inputs.
Mitigation strategies for CVE-2025-4022 should prioritize immediate patching of the web-arena-x framework to version 0.2.1 or later, which contains the necessary fixes for the HTMLContentEvaluator function. Organizations should implement strict input validation and sanitization measures for all URL parameters, particularly those used in evaluation contexts. Network segmentation and access controls should be enforced to limit exposure of the evaluation framework to untrusted networks. Additionally, implementing web application firewalls and runtime application self-protection mechanisms can provide additional layers of defense. The vulnerability's classification as a critical risk aligns with ATT&CK technique T1059, which covers "Command and Scripting Interpreter" and indicates that this flaw could enable attackers to establish persistent access through command execution capabilities. Security monitoring should be enhanced to detect suspicious URL patterns and unusual execution behavior in the evaluation framework, as these could indicate exploitation attempts.