WordPress plugin
Redirection for Contact Form 7 <= 2.3.3 — Unauthenticated Arbitrary Nonce Generation
CVE-2021-24278Published · Updated Action summary
Affected: <2.3.4Update to 2.3.4 or newer
All remediation steps- Severity
- High7.5
- CVSS
- 7.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-863 Incorrect Authorization
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Redirection for Contact Form 7 wpcf7-redirect
- Affected< 2.3.4
- Patched in2.3.4
Update to 2.3.4 or newer.
You are affected if you run < 2.3.4. Version 2.3.4 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Redirection for Contact Form 7.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 2.3.4, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Redirection for Contact Form 7 to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Chloe Chamberland.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Redirection for Contact Form 7
All 21| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization <3.2.16Update to 3.2.16 | CVE-2026-121873 | |
| Medium5.3 | Missing Authorization to Unauthenticated Arbitrary Post Meta Modification and Arbitrary File Copy via 'wpcf7-redirect' Parameter ≤3.2.14Update to 3.2.15 | CVE-2026-120659 | |
| High7.2 | 3.2.11 - Unauthenticated Stored Cross-Site Scripting 2.2.7 – 3.2.11Update to 3.2.12 | CVE-2026-111574 | |
| Medium6.5 | 3.2.10 - Unauthenticated Arbitrary Shortcode Execution 2.2.7 – 3.2.10Update to 3.2.11 | CVE-2026-80439 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤3.2.8Update to 3.2.9 | CVE-2026-23970 |
- Medium5.3Missing Authorization
<3.2.16Update to 3.2.16
- Medium5.3Missing Authorization to Unauthenticated Arbitrary Post Meta Modification and Arbitrary File Copy via 'wpcf7-redirect' Parameter
≤3.2.14Update to 3.2.15
- High7.23.2.11 - Unauthenticated Stored Cross-Site Scripting
2.2.7 – 3.2.11Update to 3.2.12
- Medium6.53.2.10 - Unauthenticated Arbitrary Shortcode Execution
2.2.7 – 3.2.10Update to 3.2.11
- High7.2Unauthenticated Stored Cross-Site Scripting
≤3.2.8Update to 3.2.9
Timeline
CVE published
Severity high, CVSS 7.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.