Cross-site request forgery (CSRF) vulnerability in WordPress Email Template Designer - WP HTML Mail versions prior to 3.0.8 allows remote attackers to hijack the authentication of administrators via unspecified vectors.
CVE-2021-20779 is a high severity with CVSS 8.8 Cross-Site Request Forgery issue affecting the Plugin Email Template Designer – WP HTML Mail. It affects Versions before 3.0.8 and is fixed in 3.0.8.
Use the related hub and response guides to connect this CVE-2021-20779 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2021-20779 is tracked for the Plugin Email Template Designer – WP HTML Mail as high severity with CVSS 8.8. The affected range is Versions before 3.0.8. Update Email Template Designer – WP HTML Mail to 3.0.8 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions before 3.0.8.
Confirm Email Template Designer – WP HTML Mail is updated to 3.0.8 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
wp-html-mail
View on wordpress.org
|
| CVE | CVE-2021-20779 |
| Patched Versions |
3.0.8
|
| Affected Versions |
Versions before 3.0.8
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
WP HTML Mail <= 3.0.9 - Missing Authorization on Rest Route
WP HTML Mail < 2.9.1 - HTML Injection
WP HTML Mail <= 3.4.0 - Cross-Site Request Forgery via 'send_test'
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