CVE-2026-55871Public exploitNetwork attack vector

Admin-only data disclosure via unparameterized search queries

Published Oct 15, 2026 · Updated Oct 15, 2026

SQL injection in GYM One before 1.4.1 allows remote authenticated users to read arbitrary database tables via admin search fields. The admin/users/index.php page concatenates search_name and search_email GET parameters into user-list and pagination COUNT queries without parameterization. Exploitation requires administrator access and exposes user information and password hashes; filesystem writes depend on database permissions.

CVSS severity6.5
Medium
EPSS probability0.34%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in GYM One before 1.4.1 allows remote authenticated users to read arbitrary database tables via admin search fields. The admin/users/index.php page concatenates search_name and search_email GET parameters into user-list and pagination COUNT queries without parameterization. Exploitation requires administrator access and exposes user information and password hashes; filesystem writes depend on database permissions.

The record

CVE
CVE-2026-55871
Published
Oct 15, 2026
Updated
Oct 15, 2026
Vendor
Mayer Bálint
Product
GYM One
Classifications
CWE-89, T1213
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=< 1.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Mayer Bálint · GYM Oneversion=< 1.4.1

Published CVSS scores

6.5GitHub_MCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1213Data from Information Repositories

Public exploit references

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Technologies

Your stack

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Your stack

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