CVE-2026-87963— Yo 1.1 - 1.3.1 - Unauthenticated SQL Injection via username Parameter
Quick assessment
Affected
Unknown Yo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Yo WordPress 插件从 1.1 版本到 1.3.1 版本存在安全缺陷：该插件在使用用户名（username）请求参数构建 SQL 查询时，未对其进行净化（sanitize）或参数化处理（parameterize）。此外，该参数在 WordPress 应用其请求转义机制之前就被读取，从而允许未经身份验证的攻击者执行 SQL 注入，进而读取任意数据库内容，包括管理员密码的哈希值。
Possible ATT&CK Techniques 2 AI
T1210 · Exploitation of Remote Services T1597 · Search Closed Sources
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I. Basic Information for CVE-2026-87963
Vulnerability Information
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Vulnerability Title
Yo 1.1 - 1.3.1 - Unauthenticated SQL Injection via username Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-87963
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Security Blog Posts for CVE-2026-87963 (1)
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🔗 Yo 1.1 – 1.3.1 – Unauthenticated SQL Injection via username Parameter | CVE 2026-87963 | Plugin Vulnerabilities exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-09-17 · 29 CVEs total
| CVE-2026-86801 | 8.8 HIGH | To Do List Member 1.4 - 1.6 - Unauthenticated Stored XSS, File Listing and Deletion via Un |
| CVE-2026-87829 | 4.3 MEDIUM | Checkout Field Manager < 7.9.7 - Subscriber+ Arbitrary Attachment Deletion via Unvalidated |
| CVE-2026-87831 | 4.3 MEDIUM | Checkout Field Manager < 7.9.7 - Subscriber+ Arbitrary Attachment Deletion via Customer Ad |
| CVE-2026-91017 | 3.7 LOW | Robokassa payment gateway for Woocommerce < 1.8.9 - Unauthenticated Payment Bypass via For |
| CVE-2025-15697 | Dictionary <= 1.0 - Reflected XSS via Multiple Parameters | |
| CVE-2026-85128 | Choose User Role at Registration for WooCommerce < 1.3.3 - Unauthenticated Privilege Escal | |
| CVE-2026-85130 | WPLP Cookie Consent < 4.4.4 - Unauthenticated Stored XSS via Consent Logs | |
| CVE-2026-86707 | Private Feed Key <= 0.1 - Unauthenticated Authentication Bypass via 'feedkey' Parameter | |
| CVE-2026-86709 | The Pressengine <= 1.0 - Unauthenticated Authentication Bypass | |
| CVE-2026-86710 | Login with QR <= 1.0.0 - Unauthenticated Authentication Bypass via 'autologin_code' Parame | |
| CVE-2026-86446 | LearnPress 4.4.3 - 4.4.6 - Unauthenticated Quiz Answer Disclosure via check-answer REST En | |
| CVE-2026-87836 | Comments Import & Export 2.1.11 - 2.5.3 - Author+ Comment PII Disclosure via Export | |
| CVE-2026-87786 | Dewa Kirim <= 1.0.0 - Unauthenticated Stored XSS via Checkout Coordinates | |
| CVE-2026-86824 | Newsletter < 9.3.8 - Unauthenticated Subscriber PII Disclosure and Modification via Predic | |
| CVE-2026-86788 | HT Mega 3.2.0 - 3.2.5 - Contributor+ Stored XSS via Section Headline Tag | |
| CVE-2026-90922 | Paid Member Subscriptions < 3.0.9 - Unauthenticated Membership Payment Bypass via PayPal S | |
| CVE-2026-88792 | Dictionary <= 1.0 - Unauthenticated Stored XSS via Direct Dictionary Update | |
| CVE-2026-88795 | wpShopGermany IT-RECHT KANZLEI < 2.4 - Unauthenticated RCE via Predictable API Token | |
| CVE-2026-88904 | PuppyFW <= 0.4.4 - Subscriber+ Arbitrary Blog Options Update and Deletion Leading to Privi | |
| CVE-2026-90923 | Autopay < 5.0.1 - Unauthenticated Cross-Customer Order Payment Parameter Disclosure and De |
Showing top 20 of 29 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Unknown
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CVE-2026-87831
Checkout Field Manager < 7.9.7 - Subscriber+ Arbitrary Attac -
CVE-2026-87829
Checkout Field Manager < 7.9.7 - Subscriber+ Arbitrary Attac -
CVE-2026-91017
Robokassa payment gateway for Woocommerce < 1.8.9 - Unauthen -
CVE-2026-86801
To Do List Member 1.4 - 1.6 - Unauthenticated Stored XSS, Fi -
CVE-2026-91019
Event Booking Manager for WooCommerce < 5.6.0 - Contributor+
V. Comments for CVE-2026-87963
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