Threat intelligence

Newsletters <= 4.14 - Unauthenticated PHP Object Injection

CVE-2026-12583 · newsletters-lite

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

Vulnerability: Newsletters <= 4.14 - Unauthenticated PHP Object Injection
Affected software: newsletters-lite(Plugin)
Affected versions: ≤ 4.14
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2026-12583
Published: 23 June 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 c967f087-89c4-4798-9758-fcbe25a44f4f). Methodology and redistribution notes

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