CVE-2026-66703 PUBLISHED

WordPress MailOptin plugin <= 1.2.78.0 - Cross Site Scripting (XSS) vulnerability

Assigner: Patchstack
Reserved: 27.07.2026 Published: 06.08.2026 Updated: 06.08.2026

Contributor Cross Site Scripting (XSS) in MailOptin <= 1.2.78.0 versions.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
CVSS Score: 6.5

Product Status

Vendor properfraction
Product MailOptin
Versions Default: unaffected
  • affected from n/a to 1.2.78.0 (incl.)

Solutions

Update the WordPress MailOptin Plugin to the latest available version (at least 1.2.78.1).

Credits

  • Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program finder

References

Problem Types

  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE

Impacts

  • CAPEC-592 Stored XSS