Security: Unsafe YAML Loading in postprocess_toc_yml.py

[tomaioo]

Summary

Security: Unsafe YAML Loading in postprocess_toc_yml.py

Problem

Severity: Critical | File: ci_scripts/postprocess_toc_yml.py:L28

The code uses yaml.load() without specifying a Loader parameter, which defaults to the unsafe Loader. This can lead to arbitrary code execution if an attacker can control the contents of toc.yml. The yaml.load() function is known to be vulnerable to deserialization attacks when used without a safe loader.

Solution

Use yaml.safe_load() instead of yaml.load(), or explicitly pass Loader=yaml.SafeLoader to yaml.load(). For example: data_loaded = yaml.safe_load(stream) or data_loaded = yaml.load(stream, Loader=yaml.SafeLoader)

Changes

• ci_scripts/postprocess_toc_yml.py (modified)

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

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Information: PoliCheck | Severity Guidance | Term
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[learn-build-service-prod]

Learn Build status updates of commit 7e2f788:

✅ Validation status: passed

File	Status	Preview URL	Details
ci_scripts/postprocess_toc_yml.py	✅Succeeded

For more details, please refer to the build report.