SQL Injection Vulnerability in Yo WordPress Plugin from Vendor
CVE-2026-87963

8.6HIGH

Key Information:

Vendor

WordPress
Status
Yo
Vendor
CVE Published:
17 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-87963?

The Yo WordPress plugin versions 1.1 through 1.3.1 are susceptible to a SQL injection vulnerability due to improper handling of the username request parameter. This flaw allows unauthenticated attackers to craft malicious SQL queries, potentially accessing sensitive information within the database, including administrator password hashes. The vulnerability occurs because the plugin fails to sanitize or parameterize the input before executing SQL commands, thus exposing the system to exploitation. It is crucial for users of affected versions to apply necessary patches and updates to mitigate the risk.

Affected Version(s)

Yo 1.1 <= 1.3.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-87963 - Proof of Concept

References

https://wpscan.com/vulnerability/1cc5d470-7ffe-496a-9911-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

João Ramos Maciel
WPScan
.