CVE-2026-8912— Contest Gallery <= 28.1.6 - Unauthenticated SQL Injection
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-8912
Vulnerability Information
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Vulnerability Title
Contest Gallery <= 28.1.6 - Unauthenticated SQL Injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Contest Gallery plugin for WordPress is vulnerable to SQL Injection via the 'form_input' parameter in versions up to, and including, 28.1.6. This is due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query inside the unauthenticated 'post_cg_gallery_form_upload' AJAX action (specifically the 'cb' branch of the included users-upload-check.php, where $f_input_id is concatenated unquoted into 'SELECT Field_Content FROM ... WHERE id = $f_input_id'). The endpoint is gated only by a public frontend nonce ('cg1l_action' / 'cg_nonce') that is exposed in the page source of any public gallery page. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| contest-gallery | Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe | 0 ~ 28.1.6 | - |
II. Public POCs for CVE-2026-8912
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
- CVE-2026-4021
Contest Gallery <= 28.1.5 - Unauthenticated Privilege Escala - CVE-2026-3180
Contest Gallery <= 28.1.4 - Unauthenticated SQL Injection - CVE-2025-12849
Contest Gallery <= 28.0.2 - Missing Authorization - CVE-2025-11254
Contest Gallery – Upload, Vote & Sell with PayPal and Stripe - CVE-2025-10383
Contest Gallery – Upload, Vote & Sell with PayPal and Stripe
Same vendor: contest-gallery
- CVE-2026-4021
Contest Gallery <= 28.1.5 - Unauthenticated Privilege Escala - CVE-2026-3180
Contest Gallery <= 28.1.4 - Unauthenticated SQL Injection - CVE-2025-12849
Contest Gallery <= 28.0.2 - Missing Authorization - CVE-2025-11254
Contest Gallery – Upload, Vote & Sell with PayPal and Stripe - CVE-2025-10383
Contest Gallery – Upload, Vote & Sell with PayPal and Stripe
Same weakness: CWE-89
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SQL Injection in extension "News system" (news) - CVE-2026-8851
SOGo < 5.12.8 SQL Injection via addUserInAcls endpoint - CVE-2026-8785
projectworlds hospital-management-system-in-php GET Paramete - CVE-2026-8772
linlinjava litemall Admin Endpoint sql injection
V. Comments for CVE-2026-8912
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