CVE-2026-34408 Auth bypass in n/a

Critical 9.1 Published Updated

Attackers can bypass password reset controls to set arbitrary passwords for any account if the user ID is known, leading to account takeover.

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-2026-34408?

CVE-2026-34408 is a critical authentication bypass vulnerability in n/a, published on 5 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Gambio 4.9.2.0 (patched in 2024-02 v1.0.0 for GX4 v4.0.0.0 to v4.9.2.0). The password reset function can be bypassed to set arbitrary passwords for arbitrary accounts if the ID is known.

Weakness: CWE-640

Which versions are affected by CVE-2026-34408?

How do I fix CVE-2026-34408?

No fix has been published for CVE-2026-34408 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-34408 being exploited?

There is no known exploitation of CVE-2026-34408 in the wild and no public exploit code.

Sources

Also known as GHSA-338p-fcwm-8fgc.

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