CVE-2026-41206: CWE-184: Incomplete List of Disallowed Inputs in ParzivalHack PySpector
PySpector versions prior to 0. 1. 8 contain an incomplete blocklist in the PluginSecurity. validate_plugin_code function, allowing bypass of input restrictions via unfiltered Python constructs. This can enable an attacker who supplies a malicious plugin file to execute arbitrary code within the PySpector process. The issue is fixed in version 0. 1. 8.
AI Analysis
Technical Summary
PySpector is a static analysis security testing framework for Python. Its plugin security validator uses AST-based static analysis to block dangerous code in plugins. Before version 0.1.8, the blocklist of disallowed inputs was incomplete, allowing attackers to bypass it using certain Python constructs not checked by the validator. This vulnerability (CWE-184) permits arbitrary code execution within the PySpector process if a malicious plugin is installed and run. The fix is implemented in version 0.1.8.
Potential Impact
An attacker able to supply a plugin file to PySpector versions before 0.1.8 can bypass the incomplete input blocklist and achieve arbitrary code execution within the PySpector process. This could compromise the host running PySpector with the privileges of that process. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade PySpector to version 0.1.8 or later, where the incomplete blocklist issue in PluginSecurity.validate_plugin_code is fixed. No other official remediation or temporary fixes are documented. Patch status is not explicitly confirmed in the vendor advisory, but the version 0.1.8 release addresses the vulnerability.
CVE-2026-41206: CWE-184: Incomplete List of Disallowed Inputs in ParzivalHack PySpector
Description
PySpector versions prior to 0. 1. 8 contain an incomplete blocklist in the PluginSecurity. validate_plugin_code function, allowing bypass of input restrictions via unfiltered Python constructs. This can enable an attacker who supplies a malicious plugin file to execute arbitrary code within the PySpector process. The issue is fixed in version 0. 1. 8.
CVSS v4.0
Score 6.9medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
PySpector is a static analysis security testing framework for Python. Its plugin security validator uses AST-based static analysis to block dangerous code in plugins. Before version 0.1.8, the blocklist of disallowed inputs was incomplete, allowing attackers to bypass it using certain Python constructs not checked by the validator. This vulnerability (CWE-184) permits arbitrary code execution within the PySpector process if a malicious plugin is installed and run. The fix is implemented in version 0.1.8.
Potential Impact
An attacker able to supply a plugin file to PySpector versions before 0.1.8 can bypass the incomplete input blocklist and achieve arbitrary code execution within the PySpector process. This could compromise the host running PySpector with the privileges of that process. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade PySpector to version 0.1.8 or later, where the incomplete blocklist issue in PluginSecurity.validate_plugin_code is fixed. No other official remediation or temporary fixes are documented. Patch status is not explicitly confirmed in the vendor advisory, but the version 0.1.8 release addresses the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-18T02:51:52.974Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e9707c87115cfb6852213f
Added to database: 4/23/2026, 1:06:04 AM
Last enriched: 4/30/2026, 8:11:35 AM
Last updated: 6/5/2026, 2:57:32 PM
Views: 69
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