What’s Vulnerable › Vulnerabilities

CVE-2021-24278: Redirection for Contact Form 7 < 2.3.4 - Unauthenticated Arbitrary Nonce Generation

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-14 · updated 2026-06-17
• Weakness: CWE-863

Description

In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, unauthenticated users can use the wpcf7r_get_nonce AJAX action to retrieve a valid nonce for any WordPress action/function.

Affected products

• Query Solutions Redirection for Contact Form 7: before 2.3.4 — fixed in 2.3.4

How to fix

Upgrade to a fixed version: Query Solutions Redirection for Contact Form 7 2.3.4. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/99f30604-d62b-4e30-afcd-b482f8d66413
• https://www.wordfence.com/blog/2021/04/severe-vulnerabilities-patched-in-redirection-for-contact-form-7-plugin/
• https://wpscan.com/vulnerability/99f30604-d62b-4e30-afcd-b482f8d66413
• https://www.wordfence.com/blog/2021/04/severe-vulnerabilities-patched-in-redirection-for-contact-form-7-plugin/

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