Unauthenticated PHP Object Injection in Hash Form Plugin by WordPress
CVE-2026-78292

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Hash Form
Vendor
CVE Published:
27 August 2026

What is CVE-2026-78292?

The vulnerability in the Hash Form Plugin allows unauthenticated users to exploit PHP Object Injection in versions up to 1.4.1. This security flaw can potentially lead to unauthorized access and manipulation of sensitive data within the WordPress environment. Website owners using affected versions should prioritize immediate updates to mitigate the risk associated with this vulnerability.

Affected Version(s)

Hash Form <= 1.4.1

References

https://patchstack.com/database/wordpress/plugin/hash-for...
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

Supakiad S. (m3ez) | Patchstack Bug Bounty Program
.