---
id: CVE-2026-78531
title: Unauthenticated PHP Object Injection in Jacqueline <= 2.22 versions.
summary: Unauthenticated PHP Object Injection in Jacqueline <= 2.22 versions.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
published: '2026-10-10'
updated: '2026-10-10'
sourceUpdated: '2026-10-10T20:16:46.830'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78531'
references:
  - url: >-
      https://patchstack.com/database/wordpress/theme/jacqueline/vulnerability/wordpress-jacqueline-theme-2-22-php-object-injection-vulnerability?_s_id=cve
    label: audit@patchstack.com
tags:
  - nvd
ingestedAt: '2026-10-10T20:31:30.679Z'
---

## Overview

Unauthenticated PHP Object Injection in Jacqueline <= 2.22 versions.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.