Email Before Download <= 3.6 — SMTP Header Injection
52dc69e7-d4c0-492e-a334-54464fc963fdPublished · Updated Action summary
Affected: ≤3.6Update to 4.0 or newer
All remediation steps- Severity
- Medium5.8
- CVSS
- 5.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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:CScope- Changed
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 page8
Am I affected?
Email Before Download email-before-download
- Affected≤ 3.6
- Patched in4.0
Update to 4.0 or newer.
You are affected if you run ≤ 3.6. Version 4.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Email Before Download.
- 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 4.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Email Before Download to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Clément Notin.
The Email Before Download plugin for WordPress is vulnerable to SMTP Header Injection in versions up to, and including, 3.6 via the 'email_from' POST parameter, where the 'emailfrom' variable is concatenated in the SMTP 'From:' header and then directly passed to wp_mail. This makes it possible for unauthenticated attackers to add newline characters which can lead to arbitrary headers/message bodies.
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 Email Before Download
All 5| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Cross-Site Request Forgery ≤6.9.7Update to 6.9.8 | CVE-2024-23519 | |
| High7.2 | Admin+ SQL Injection ≤6.7Update to 6.8 | CVE-2021-24748 | |
| Critical9.8 | SQL Injection <4.0Update to 4.0 | — | |
| Critical9.8 | SQL Injection ≤3.4Update to 3.4.1 | — |
- Medium5.3Cross-Site Request Forgery
≤6.9.7Update to 6.9.8
- High7.2Admin+ SQL Injection
≤6.7Update to 6.8
- Critical9.8SQL Injection
<4.0Update to 4.0
- Critical9.8SQL Injection
≤3.4Update to 3.4.1
Timeline
CVE published
Severity medium, CVSS 5.8
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.