Cross-Site Scripting in Contact Form by Supsystic Affecting WordPress
CVE-2026-73378

7.1HIGH

Key Information:

Vendor

WordPress
Status
Contact Form By Supsystic
Vendor
CVE Published:
18 August 2026

What is CVE-2026-73378?

The Contact Form by Supsystic plugin for WordPress prior to version 1.10.0 is vulnerable to unauthenticated Cross-Site Scripting (XSS) attacks. This vulnerability allows attackers to inject malicious scripts into web pages viewed by users, potentially leading to data theft or unauthorized actions performed on behalf of users. It is crucial for users of affected versions to update their plugins to the latest version to mitigate this security risk.

Affected Version(s)

Contact Form by Supsystic < 1.10.0

References

https://patchstack.com/database/wordpress/plugin/contact-...
vdb-entry

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Asim Alshaya | Patchstack Bug Bounty Program
.