CVE-2026-86778 PUBLISHED

Username Enumeration in Maksisoft Technology's Maksisoft Gym

Assigner: TR-CERT
Reserved: 08.09.2026 Published: 30.09.2026 Updated: 30.09.2026

Observable response discrepancy vulnerability in Maksisoft Technology, IT, and Software Industry and Trade Inc. Maksisoft Gym allows Account Footprinting.

This issue affects Maksisoft Gym: from 0.5.10 before 0.5.11.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS Score: 5.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	Maksisoft Technology, IT, and Software Industry and Trade Inc.
Product	Maksisoft Gym
Versions	Default: unaffected affected from 0.5.10 to 0.5.11 (excl.)

Credits

Özcan Ersan finder

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1223

Problem Types

CWE-204 Observable response discrepancy CWE

Impacts

CAPEC-575 Account Footprinting