CVE-2026-8912Network attack vector

Unauthenticated SQL injection via unquoted form_input

Published May 19, 2026 · Updated May 19, 2026

SQL injection in Contest Gallery 28.1.6 and earlier allows remote attackers to read WordPress database data via form_input. In users-upload-check.php, the cb branch concatenates the form_input-derived $f_input_id unquoted into a SELECT statement instead of preparing it. A public gallery page exposes the only required nonce, so no account is needed and the demonstrated consequence is database confidentiality loss.

CVSS severity7.5
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Contest Gallery 28.1.6 and earlier allows remote attackers to read WordPress database data via form_input. In users-upload-check.php, the cb branch concatenates the form_input-derived $f_input_id unquoted into a SELECT statement instead of preparing it. A public gallery page exposes the only required nonce, so no account is needed and the demonstrated consequence is database confidentiality loss.

The record

CVE
CVE-2026-8912
Published
May 19, 2026
Updated
May 19, 2026
Vendor
Wasiliy Strecker / ContestGallery developer
Product
Contest Gallery
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2026CVE publishedPublication date reported by the CVE source.
  2. May 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=28.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wasiliy Strecker / ContestGallery developer · Contest Galleryversion=0 <=28.1.6

Published CVSS scores

7.5WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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