EUVD-2026-25160Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
7DescriptionGitHub Advisory
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.
AnalysisAI
PySpector versions prior to 0.1.8 allow arbitrary code execution within the PySpector process when a malicious plugin is supplied and executed. The plugin security validator uses incomplete AST-based static analysis that fails to block dangerous Python constructs, permitting attackers with write access to plugin files to bypass the blocklist and achieve remote code execution. The vulnerability is fixed in version 0.1.8.
Technical ContextAI
PySpector is a static analysis security testing (SAST) framework for Python that validates plugins through AST (Abstract Syntax Tree) analysis before execution. The vulnerable component is the PluginSecurity.validate_plugin_code function, which maintains a blocklist of dangerous Python constructs to prevent unsafe code execution. The root cause (CWE-184: Incomplete List of Disallowed Inputs) stems from an incomplete blocklist implementation - the validator fails to enumerate and block all Python language constructs that could be abused for code execution. Attackers can use alternative Python constructs not covered by the blocklist to execute arbitrary code within the PySpector process, effectively bypassing the security gate that should prevent malicious plugins from running.
RemediationAI
Upgrade PySpector to version 0.1.8 or later, which includes fixes to the plugin security validator blocklist and improved AST-based checks for dangerous constructs (confirmed by commits 3c9547157fc07396f22b26b3484a9a91eba98555 and 4e279e078c53d760fd321ff9b698d683c65ccb8e on GitHub). Until upgrade is possible, restrict write access to plugin directories to trusted developers only, audit all installed plugins for suspicious constructs (imports, exec/eval calls, __import__ usage, compile() calls, or unusual AST patterns), and consider running PySpector in an isolated environment or container with limited privileges. If running PySpector in a shared development environment, enforce code review requirements for plugin submissions and use filesystem-level access controls (ACLs or Unix permissions) to prevent unauthorized plugin modification.
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External POC / Exploit Code
Leaving vuln.today