Mail logging <= 2.1.12 - Unauthenticated Stored Cross-Site Scripting via PHPMailer 'wp_mail_failed' Error Message
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Mail logging – WP Mail Catcher plugin for WordPress is vulnerable to Stored Cross-Site Scripting via PHPMailer 'wp_mail_failed' Error Message in all versions up to, and including, 2.1.12 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires a separately installed plugin, such as Contact Form 7, that passes unauthenticated user-controlled input into mail fields whose content PHPMailer will include in its failure error message.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-03 Threatist record created from CVE-2026-93889
- 2026-10-03 Alias added: GHSA-7wqp-vpcj-332m
- 2026-10-03 CISA SSVC decision points changed
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6a1d9d03-0216-484c-85ca-73f157595713?source=cve
- https://plugins.trac.wordpress.org/browser/wp-mail-catcher/tags/2.1.12/src/Loggers/LogHelper.php#L69
- https://plugins.trac.wordpress.org/browser/wp-mail-catcher/tags/2.1.12/src/Views/LogModal.php#L83
- https://plugins.trac.wordpress.org/browser/wp-mail-catcher/tags/2.1.12/src/Loggers/WpMail.php#L30
- https://plugins.trac.wordpress.org/browser/wp-mail-catcher/tags/2.1.12/src/MailAdminTable.php#L149
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3717442%40wp-mail-catcher&new=3717442%40wp-mail-catcher
More wardee vulnerabilities
- TI-2026-83504 Mail logging & Catcher exposes password-reset keys to subscribers CVSS 3.1HIGH 7.5
Sources
- CVE-2026-93889 · CVE Program
- CVE-2026-93889 · NVD
- FIRST EPSS
- GHSA-7wqp-vpcj-332m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences