Quick answers
- Is CVE-2026-104398 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-104398 being exploited in the wild.
- How severe is CVE-2026-104398?
- Critical severity, with a CVSS score of 9.8, published 10 October 2026.
- Which products and versions are affected?
- VillaTheme AFFI – Affiliate Marketing for WooCommerce through 1.0.10.
- Is there a fix for CVE-2026-104398?
- Yes: fixed in 1.0.11. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-104398 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-104398?
- Check whether you run VillaTheme AFFI – Affiliate Marketing for WooCommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 1.0.11
Technical details
The plugin versions up to 1.0.10 contain a deserialization of untrusted data vulnerability enabling PHP object injection (CWE-502). The flaw allows unauthenticated attackers to inject malicious objects that get unserialized by the application, leading to arbitrary code execution with the privilege level of the web server process.
Affected products
- VillaTheme AFFI – Affiliate Marketing for WooCommerce through 1.0.10
Timeline
- 2026-10-10: disclosed
- 2026-10-08: advisory