CVE-2021-24280 json
Redirection for Contact Form 7 < 2.3.4 - Authenticated PHP Object Injection
published 2021-05-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11194
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, any authenticated user, such as a subscriber, could use the import_from_debug AJAX action to inject PHP objects.
Patch / fix
- querysol redirection_for_contact_form_7 2.3.4
Exploit prediction
1.97% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- 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
- wpscan.com https://wpscan.com/vulnerability/db4ba6b0-887e-4ec1-8935-ab21d369b329 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- Query Solutions Redirection for Contact Form 7
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
- Technology feeds
References
-
wordfence.com
/blog/2021/04/severe-vulnerabilities-patched-in-redirection-for-contact-form-7-plugin/
exploit, vendor-advisory
-
wpscan.com
/vulnerability/db4ba6b0-887e-4ec1-8935-ab21d369b329
exploit, vendor-advisory
Sources
- CVE List CVE-2021-24280
- NVD CVE-2021-24280
Fencer Vulns 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.