CVE-2025-32782 Ash Authentication email link auto-click account confirmation vulnerability

Medium 5.3 Published Updated

Attackers can register accounts using victim emails that are auto-confirmed by email clients, bypassing manual verification steps.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2025-32782?

CVE-2025-32782 is a medium-severity vulnerability in team-alembic ash_authentication, published on 15 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Ash Authentication provides authentication for the Ash framework. The confirmation flow for account creation currently uses a GET request triggered by clicking a link sent via email. Some email clients and security tools (e.g., Outlook, virus scanners, and email previewers) may automatically follow these links, unintentionally confirming the account. This allows an attacker to register an account using another user’s email and potentially have it auto-confirmed by the victim’s email client. This does not allow attackers to take over or access existing accounts or private data. It is limited to account confirmation of new accounts only. This vulnerability is fixed in 4.7.0.

Weakness: CWE-306

Which versions are affected by CVE-2025-32782?

2 open source packages ship an affected version, including ash_authentication.

PackageAffectedFixed in
ash_authentication HexAll versions4.7.0
ash_authentication HexAll versions4.7.0

How do I fix CVE-2025-32782?

Upgrade ash_authentication to 4.7.0 or later.

Is CVE-2025-32782 being exploited?

There is no known exploitation of CVE-2025-32782 in the wild and no public exploit code.

Sources

Also known as GHSA-3988-q8q7-p787.

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