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Fencer Intel
high 7.5

CVE-2021-24278 json

Redirection for Contact Form 7 < 2.3.4 - Unauthenticated Arbitrary Nonce Generation

published 5y ago modified 4mo ago also EUVD-2021-11192

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.4%
EPSS 7.4% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known, plus a Nuclei check

Summary

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.

Patch / fix

  • querysol redirection_for_contact_form_7 2.3.4

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Exploit prediction

7.36% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Nuclei template WordPress Contact Form 7 <2.3.4 - Arbitrary Nonce Generation nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/99f30604-d62b-4e30-afcd-b482f8d66413 referenced PoC, tagged "exploit" by a source, unverified
  • wordfence.com https://www.wordfence.com/blog/2021/04/severe-vulnerabilities-patched-in-redirection-for-contact-form-7-plugin/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Query Solutions Redirection for Contact Form 7

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.