CVE-2025-3623 Uncanny Automator <= 6.4.0.1 - Unauthenticated PHP Object Injection in automator_api_decode_message Function

Critical 9.1 Published Updated

Unauthenticated attackers can exploit PHP object injection to delete arbitrary files via a POP chain in the Uncanny Automator plugin.

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-2025-3623?

CVE-2025-3623 is a critical unsafe deserialization vulnerability in uncannyowl Uncanny Automator – Easy Automation, Integration, Webhooks & Workflow Builder Plugin, published on 14 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Uncanny Automator plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.4.0.1 via deserialization of untrusted input in the automator_api_decode_message() function. This makes it possible for unauthenticated to inject a PHP Object. The additional presence of a POP chain allows attackers to delete arbitrary files.

Weakness: CWE-502

Which versions are affected by CVE-2025-3623?

It affects 1 product.

Products include Uncannyowl Uncanny Automator.

How do I fix CVE-2025-3623?

No fix has been published for CVE-2025-3623 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2025-3623 being exploited?

There is no known exploitation of CVE-2025-3623 in the wild and no public exploit code.

Sources

Also known as GHSA-35ch-876f-6mw7.

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