JetFormBuilder — Dynamic Blocks Form Builder < 3.6.5.2 — Unauthenticated Email Header Injection
CVE-2026-19862Published · Updated Action summary
Affected: <3.6.5.2Update to 3.6.5.2 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
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
JetFormBuilder — Dynamic Blocks Form Builder jetformbuilder
- Affected< 3.6.5.2
- Patched in3.6.5.2
Update to 3.6.5.2 or newer.
You are affected if you run < 3.6.5.2. Version 3.6.5.2 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under JetFormBuilder — Dynamic Blocks Form Builder.
- 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 3.6.5.2, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch JetFormBuilder — Dynamic Blocks Form Builder to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Emirhan Kurt.
The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is vulnerable to Email Header Injection in all versions up to 3.6.5.2 (exclusive). This makes it possible for unauthenticated attackers to inject arbitrary email headers.
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 JetFormBuilder — Dynamic Blocks Form Builder
All 37| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤3.6.8Update to 3.6.8.1 | CVE-2026-123482 | |
| Medium6.5 | Unauthenticated Arbitrary Shortcode Execution ≤3.6.8Update to 3.6.8.1 | CVE-2026-123483 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤3.6.8Update to 3.6.8.1 | CVE-2026-123484 | |
| Medium6.5 | Unauthenticated Arbitrary Shortcode Execution ≤3.6.8Update to 3.6.8.1 | CVE-2026-123860 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Form Record Preset Source ≤3.6.7Update to 3.6.7.1 | CVE-2026-111317 |
- High7.2Unauthenticated Stored Cross-Site Scripting
≤3.6.8Update to 3.6.8.1
- Medium6.5Unauthenticated Arbitrary Shortcode Execution
≤3.6.8Update to 3.6.8.1
- High7.2Unauthenticated Stored Cross-Site Scripting
≤3.6.8Update to 3.6.8.1
- Medium6.5Unauthenticated Arbitrary Shortcode Execution
≤3.6.8Update to 3.6.8.1
- High7.2Unauthenticated Stored Cross-Site Scripting via Form Record Preset Source
≤3.6.7Update to 3.6.7.1
Timeline
CVE published
Severity medium, CVSS 5.3
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.