---
id: CVE-2026-87963
title: >-
  The Yo WordPress plugin from 1.1 through 1.3.1 does not sanitize or
  parameterize the username request parameter before using it in a SQL query,
  and reads it before WordPress applies its request escaping, allowing
  unauthenticated attacker…
summary: >-
  The Yo WordPress plugin from 1.1 through 1.3.1 does not sanitize or
  parameterize the username request parameter before using it in a SQL query,
  and reads it before WordPress applies its request escaping, allowing
  unauthenticated attacker…
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-89
product: Yo
affected:
  - Yo >= 1.1 <= 1.3.1
published: '2026-09-17'
updated: '2026-09-20'
sourceUpdated: '2026-09-20T14:16:59.507'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87963'
references:
  - url: 'https://wpscan.com/vulnerability/1cc5d470-7ffe-496a-9911-9b3b5c700194/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-17T12:09:33.965481Z'
epss: 0.00324
epssPercentile: 0.25723
ingestedAt: '2026-09-17T07:13:35.792Z'
---

## Overview

The Yo WordPress plugin from 1.1 through 1.3.1 does not sanitize or parameterize the username request parameter before using it in a SQL query, and reads it before WordPress applies its request escaping, allowing unauthenticated attackers to perform SQL injection and read arbitrary database contents including administrator password hashes.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.