CVE-2026-104398 WordPress AFFI – Affiliate Marketing for WooCommerce plugin <= 1.0.10 - PHP Object Injection vulnerability
An attacker can exploit PHP object injection in the AFFI WooCommerce plugin to potentially execute arbitrary code on the WordPress site.
- 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-2026-104398?
CVE-2026-104398 is a critical unsafe deserialization vulnerability in VillaTheme AFFI – Affiliate Marketing for WooCommerce, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Deserialization of Untrusted Data vulnerability in VillaTheme AFFI – Affiliate Marketing for WooCommerce affi-affiliate-marketing-for-woo allows Object Injection.This issue affects AFFI – Affiliate Marketing for WooCommerce: from n/a through 1.0.10.
Weakness: CWE-502
Which versions are affected by CVE-2026-104398?
How do I fix CVE-2026-104398?
No fix has been published for CVE-2026-104398 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-2026-104398 being exploited?
There is no known exploitation of CVE-2026-104398 in the wild and no public exploit code.
Sources
Also known as GHSA-qhr7-rxm2-7x33.