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CVE-2026-54859

CriticalCVSS 9.8/10Last modified Oct 29, 2026

Description

Unauthenticated PHP Object Injection in Preservation <= 1.15 versions.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

Vendor	Product	Versions
ThemeREX	Preservation	<= 1.15

References

https://patchstack.com/database/wordpress/theme/preservation/vulnerability/wordpress-preservation-theme-1-15-php-object-injection-vulnerability?_s_id=cve

Timeline

Published: Oct 29, 2026
Last modified: Oct 29, 2026
NVD status: Deferred

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CVE-2026-54859: Critical severity, CVSS 9.8 | Vulnix