CVE-2025-3603 Flynax Bridge <= 2.2.0 - Unauthenticated Privilege Escalation via Password Update

Critical 9.8 Published Updated

Unauthenticated attackers can change arbitrary user passwords, including administrators, to gain unauthorized access and escalate privileges.

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-2025-3603?

CVE-2025-3603 is a critical authentication bypass vulnerability in v1rustyle Flynax Bridge, published on 24 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Flynax Bridge plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 2.2.0. This is due to the plugin not properly validating a user's identity prior to updating their details like password. This makes it possible for unauthenticated attackers to change arbitrary user's passwords, including administrators, and leverage that to gain access to their account.

Weakness: CWE-620

Which versions are affected by CVE-2025-3603?

It affects 1 product.

Products include Flynax Flynax Bridge.

How do I fix CVE-2025-3603?

No fix has been published for CVE-2025-3603 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-2025-3603 being exploited?

There is no known exploitation of CVE-2025-3603 in the wild and no public exploit code.

Sources

Also known as GHSA-jf94-mqcr-qwmx.

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