Threat intelligence

Seil <= 1.7.1 - Unauthenticated PHP Object Injection

CVE-2025-53242 · seil

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Seil at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Seil <= 1.7.1 - Unauthenticated PHP Object Injection
Affected software: seil(Theme)
Affected versions: ≤ 1.7.1
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2025-53242
Published: 8 May 2025
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory 4e0f666b-0549-4728-b056-4d59cf262c4b). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Seil version against this catalog when the Defence plugin is connected to your WordPress site.

Start SiteRespond Defence for WordPress — £29.99/monthScan your website

All Seil advisoriesBack to catalog