Unauthenticated PHP Object Injection in Kalles Addons by WordPress
CVE-2026-73389

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Kalles Addons
Vendor
CVE Published:
19 August 2026

What is CVE-2026-73389?

A vulnerability has been identified in the Kalles Addons for WordPress. This issue, present in versions 1.0.6 and earlier, allows for unauthenticated PHP object injection. Attackers could exploit this vulnerability to manipulate the application, potentially leading to unauthorized actions or data exposure. Website administrators using the affected Kalles Addons versions are encouraged to upgrade to patched versions to secure their sites from potential attacks.

Affected Version(s)

Kalles Addons <= 1.0.6

References

https://patchstack.com/database/wordpress/plugin/kalles-a...
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

João Pedro S Alcântara (Kinorth) | Patchstack Bug Bounty Program
.