Deserialization Vulnerability in Link Whisper Free by Link Whisper INC
CVE-2026-109686

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Link Whisper Free
Vendor
CVE Published:
15 October 2026

What is CVE-2026-109686?

A vulnerability exists in Link Whisper Free that allows attackers to exploit deserialization of untrusted data, leading to potential object injection. This issue may allow an attacker to execute arbitrary PHP code, compromising the security of affected installations. It is crucial for users to update to the latest version to mitigate this vulnerability.

Affected Version(s)

Link Whisper Free 0 <= 0.9.7

References

https://patchstack.com/database/wordpress/plugin/link-whi...
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

TarcĂ­sio Luchesi(Poystick) | Patchstack Bug Bounty Program
.