CVE-2026-41206
PySpector is a static analysis security testing (SAST) Framework engineered for modern Python development workflows. The plugin security validator in PySpector uses AST-based static analysis to prevent dangerous code from being loaded as plugins. Prior to version 0.1.8, the blocklist implemented in `PluginSecurity.validate_plugin_code` is incomplete and can be bypassed using several Python constructs that are not checked. An attacker who can supply a plugin file can achieve arbitrary code execution within the PySpector process when that plugin is installed and executed. Version 0.1.8 fixes the issue.
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PySpector is a niche static analysis tool for Python, and this vulnerability requires an attacker to successfully plant a malicious plugin file. While it allows arbitrary code execution, the tool's limited adoption compared to standard linters means it does not pose a systemic risk to the general community.
Severity
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCWE-184EPSS
Affects
parzivalhack:pyspectorTechnical description
PySpector is a static analysis security testing (SAST) Framework engineered for modern Python development workflows. The plugin security validator in PySpector uses AST-based static analysis to prevent dangerous code from being loaded as plugins. Prior to version 0.1.8, the blocklist implemented in `PluginSecurity.validate_plugin_code` is incomplete and can be bypassed using several Python constructs that are not checked. An attacker who can supply a plugin file can achieve arbitrary code execution within the PySpector process when that plugin is installed and executed. Version 0.1.8 fixes the issue.
References
- https://github.com/ParzivalHack/PySpector/commit/3c9547157fc07396f22b26b3484a9a91eba98555
- https://github.com/ParzivalHack/PySpector/commit/4e279e078c53d760fd321ff9b698d683c65ccb8e
- https://github.com/ParzivalHack/PySpector/security/advisories/GHSA-vp22-38m5-r39r
- https://github.com/ParzivalHack/PySpector/security/advisories/GHSA-vp22-38m5-r39r