Contact Builder by Themify <= 1.4.5 — Email Injection
0232a3a5-e91e-4213-8c21-900fc805bad7Published · Updated Action summary
Affected: ≤1.4.5Update to 1.4.6 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-20 Improper Input Validation
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page7
Am I affected?
Contact Builder by Themify builder-contact
- Affected≤ 1.4.5
- Patched in1.4.6
Update to 1.4.6 or newer.
You are affected if you run ≤ 1.4.5. Version 1.4.6 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Contact Builder by Themify.
- 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 1.4.6, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Contact Builder by Themify to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to David Cucala.
The Contact Builder by Themify plugin is vulnerable to email injection in versions up to, and including 1.4.5. This makes it possible for attackers to forward contact form submissions as a "copy" to the contact-email supplied even when the setting is disabled. In addition, the contact-message does not do any input sanitization allowing HTML to be injected into the message content. This was being actively exploited to craft phishing emails and sending those via the vulnerable sites.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- 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.