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Issue title
Ruby YAML.load / Marshal.load on untrusted input
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Issue body (markdown)
## Code-quality scan: `facebook/docusaurus`
**Score: 78/100 (A-)** · 64 findings · scanned 2026-06-05 08:58 UTC · 126,498 LOC
| Severity | Count |
|---|---|
| CRITICAL | 8 |
| HIGH | 21 |
| MEDIUM | 9 |
| LOW | 6 |
📊 [Full filterable report](https://repobility.com/scan/6d33716a-d17c-47d9-beb3-8115a8f07944/) · 
### Top findings
1. **CRITICAL** `MINED018` — Unsafe Deserialization Pickle
`packages/docusaurus-utils/src/dataFileUtils.ts:61` · CWE-502 · ✓ Repobility
2. **CRITICAL** `MINED018` — Unsafe Deserialization Pickle
`packages/docusaurus-utils-validation/src/tagsFile.ts:118` · CWE-502 · ✓ Repobility
3. **CRITICAL** `MINED018` — Unsafe Deserialization Pickle
`packages/docusaurus-plugin-content-docs/src/sidebars/index.ts:61` · CWE-502 · ✓ Repobility
4. **CRITICAL** `SEC116` — Ruby YAML.load / Marshal.load on untrusted input
`packages/docusaurus-utils-validation/src/tagsFile.ts:118` · A08:2021 Software & Data Integrity Failures
5. **CRITICAL** `SEC116` — Ruby YAML.load / Marshal.load on untrusted input
`packages/docusaurus-plugin-content-docs/src/sidebars/index.ts:61` · A08:2021 Software & Data Integrity Failures
---
**Security note**: this issue is public. If any flagged finding is a real, exploitable vulnerability, please redirect to your `SECURITY.md` policy or open a [private security advisory](https://docs.github.com/en/code-security/security-advisories/guidance-on-reporting-and-writing-information-about-vulnerabilities/privately-reporting-a-security-vulnerability) instead. We're happy to close this and re-submit privately.
---
_Filed automatically. Close this issue if not useful — we won't refile. Full report: https://repobility.com/scan/6d33716a-d17c-47d9-beb3-8115a8f07944/_
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