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TI-2026-74988 Aliases CVE-2026-55871

SQL injection in GYM One admin user search

Priority MEDIUM 64CWE-89Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
SQL injection
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-89.

Summary

GYM One from mayerbalintdev is affected before 1.4.1. The admin/users/index.php page concatenates the search_name and search_email GET parameters into SQL queries without prepared statements (CWE-89). An authenticated administrator can inject SQL through either search field to read data from arbitrary tables, including user information and password hashes, and depending on database permissions the injection may also allow filesystem writes.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

GYM One is open-source gym management software for fitness centers, personal trainers, and sports clubs. Prior to 1.4.1, GYM One's admin/users/index.php concatenates the search_name and search_email GET parameters into both the user-list query and the COUNT query used for pagination without prepared statements. An authenticated administrator can inject SQL through either search field to read data from arbitrary tables, including user information and password hashes. Depending on database permissions, the same injection may also permit filesystem writes. This issue is fixed in version 1.4.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00342 27th percentileScored 2026-11-07
Fix Fixed GYM-One (mayerbalintdev): 1.4.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
mayerbalintdevGYM-Onebefore 1.4.11.4.1Patch availableCNA
  • GYM-One Vendormayerbalintdev Affected before 1.4.1 Fixed in 1.4.1 Patch available CNA

Remediation

Upgrade GYM One to version 1.4.1, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA GYM-One (mayerbalintdev) Fixed in 1.4.1

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-55871

References

Other 3

  • TI-2026-74989 Stored cross-site scripting in GYM One admin user list CVSS 3.1HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences