PatchTheCVECVE-2021-24278: In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, unauthenticated users can use the wpcf7r_
CVE-2021-24278 is a high-severity flaw (CVSS 7.5) affecting redirection for contact form 7. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- EPSS top 6%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 7.4% (top 6%) |
| CISA exploited list | No |
| Weakness | CWE-863 |
| Published | 2021-05-14 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Nuclei scan template: WordPress Contact Form 7 <2.3.4 - Arbitrary Nonce Generation
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-24278?
redirection for contact form 7: upgrade to 2.3.4. Exact commands for each OS are on this page.
Is CVE-2021-24278 being exploited?
CVE-2021-24278 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-24278 affect?
CVE-2021-24278 affects redirection for contact form 7. Severity is high (CVSS 7.5). 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.
How urgent is CVE-2021-24278?
Priority 60/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action
Software pages
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