Threat intelligence

Léonie <= 1.2.1 - Unauthenticated PHP Object Injection

CVE-2026-40758 · lonie

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

Vulnerability: Léonie <= 1.2.1 - Unauthenticated PHP Object Injection
Affected software: lonie(Theme)
Affected versions: ≤ 1.2.1
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2026-40758
Published: 20 April 2026
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 5b9326a5-6373-4fc1-a510-f793c75cf2a2). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Lonie 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 Lonie advisoriesBack to catalog