CVE-2025-53242 WordPress Seil Theme <= 1.7.1 - Deserialization of untrusted data Vulnerability
Attackers can exploit unsafe deserialization in the Seil WordPress theme to potentially execute arbitrary code on the server.
- 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-2025-53242?
CVE-2025-53242 is a critical unsafe deserialization vulnerability in VictorThemes Seil, published on 6 Nov 2025. 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 VictorThemes Seil seil allows Object Injection.This issue affects Seil: from n/a through <= 1.7.1.
Weakness: CWE-502
Which versions are affected by CVE-2025-53242?
How do I fix CVE-2025-53242?
No fix has been published for CVE-2025-53242 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-2025-53242 being exploited?
There is no known exploitation of CVE-2025-53242 in the wild and no public exploit code.
Sources
Also known as GHSA-xg8f-g55r-6q3h.