9.8Critical

CVE-2026-54859WordPress Preservation theme <= 1.15 - PHP Object Injection vulnerability

ThemeREX Preservation Published: 2026-10-29 18:24 (16 days ago)

Description

Unauthenticated PHP Object Injection in Preservation <= 1.15 versions.

Weakness (CWE): CWE-502

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
ThemeREX	Preservation	≤ 1.15

References and patches

https://patchstack.com/database/wordpress/theme/preservation/vulnerability/wordpress-preservation-theme-1-15-… vdb-entry

CVSS score

9.8Critical

Source: Patchstack · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

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

All scores (2)

cna	CVSS 3.1	9.8Critical
audit@patchstack.com	CVSS 3.1	9.8Critical

EPSS (chance of exploitation in 30 days)

0.53%

higher than 45% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: yes
Technical impact: total

Timeline

ID reserved2026-06-16
Published2026-10-29 18:24
Reached IP-DB2026-10-29 19:03
Last updated2026-10-29 23:17

Assigned by (CNA): Patchstack
NVD status: Deferred

View at source: CVE.org · NVD

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