CVE-2026-86778 Username Enumeration in Maksisoft Technology's Maksisoft Gym

Medium 5.3 Published Updated

Attackers can enumerate valid usernames due to response discrepancies, facilitating targeted attacks against Maksisoft Gym users.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-86778?

CVE-2026-86778 is a medium-severity vulnerability in Maksisoft Gym, published on 30 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-204

Which versions are affected by CVE-2026-86778?

How do I fix CVE-2026-86778?

No fix has been published for CVE-2026-86778 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-86778 being exploited?

There is no known exploitation of CVE-2026-86778 in the wild and no public exploit code.

Sources

Also known as GHSA-hvqx-5j72-5ggm.

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