Unauthenticated PHP Object Injection Vulnerability in FundEngine by WordPress
CVE-2026-73993

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Fundengine
Vendor
CVE Published:
20 August 2026

What is CVE-2026-73993?

The FundEngine plugin for WordPress is susceptible to an unauthenticated PHP Object Injection vulnerability in versions 1.7.9 and earlier. This flaw allows an attacker to exploit the system without requiring prior authentication, potentially leading to remote code execution or other harmful actions. Users of affected versions are encouraged to update to the latest version to mitigate risks.

Affected Version(s)

FundEngine <= 1.7.9

References

https://patchstack.com/database/wordpress/plugin/wp-fundr...
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

Taylsec | Patchstack Bug Bounty Program
.