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CVE-2026-16586— Contest Gallery <= 30.0.6 - Authenticated (Author+) Second-Order SQL Injection via MultipleFiles Second-Order Payload via 'cg_multiple_files_for_post' -> 'cgRealId'

Quick assessment

Affected
contest-gallery Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe
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.

WordPress Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe是WordPress基金会的一款照片投票与售卖插件。 WordPress Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe 30.0.7及之前版本存在SQL注入漏洞，该漏洞源于对用户提供参数'cg_multiple_files_for_post'和'

CVSS 6.5 · Medium EPSS 0.55% · P44

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
contest-gallery Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe ≤ 30.0.7 affected
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I. Basic Information for CVE-2026-16586

Vulnerability Information
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Vulnerability Title
Contest Gallery <= 30.0.6 - Authenticated (Author+) Second-Order SQL Injection via MultipleFiles Second-Order Payload via 'cg_multiple_files_for_post' -> 'cgRealId'
Source: CVE Program / CVE List V5
Vulnerability Description
The Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe plugin for WordPress is vulnerable to Second-Order SQL Injection via MultipleFiles Second-Order Payload via 'cg_multiple_files_for_post' -> 'cgRealId' in all versions up to, and including, 30.0.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with author-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe是WordPress基金会的一款照片投票与售卖插件。 WordPress Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe 30.0.7及之前版本存在SQL注入漏洞，该漏洞源于对用户提供参数'cg_multiple_files_for_post'和'
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
contest-gallery Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe 0 ~ 30.0.7 -

II. Public POCs for CVE-2026-16586

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III. Intelligence Information for CVE-2026-16586

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Vendor Advisories for CVE-2026-16586 (1)

IV. Related Vulnerabilities

Same product: Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe
Same vendor: contest-gallery
Same weakness: CWE-89

V. Comments for CVE-2026-16586

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