Unauthenticated PHP Object Injection in HappyForms Plugin by WordPress
CVE-2026-49768

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Happyforms
Vendor
CVE Published:
15 June 2026

What is CVE-2026-49768?

The HappyForms plugin for WordPress has a vulnerability that allows for unauthenticated PHP Object Injection. This issue affects versions up to and including 1.26.13, potentially enabling unauthorized users to execute malicious code and compromise the integrity of the affected site. Administrators should take immediate action to update the plugin to mitigate these risks.

Affected Version(s)

Happyforms <= 1.26.13

References

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

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

longnv719 | Patchstack Bug Bounty Program
.