---
id: "CVE-2026-62005"
kind: "vulnerability"
aliases: ["CVE-2026-62005"]
title: "Muzicon WordPress theme: unauthenticated PHP object injection lets attackers run code"
severity: "critical"
cvss: 9.8
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "muzicon", "fixed": [], "affected": "<= 1.15", "ecosystem": "wordpress-theme"}]
ecosystems: []
tags: ["muzicon", "package", "php-object-injection", "unauthenticated", "wordpress", "wordpress-theme"]
not_affected_if: ["managed-hosting-with-waf-rule", "theme-not-installed"]
published_at: "2026-10-29T16:18:13+00:00"
first_seen_at: "2026-10-29T16:26:00+00:00"
updated_at: "2026-10-29T16:29:34+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-62005", "first_seen_at": "2026-10-29T16:26:00+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-29T16:29:34+00:00"}]
---

# Muzicon WordPress theme: unauthenticated PHP object injection lets attackers run code

Muzicon (Music Festival & Concert WordPress theme) 1.15 and earlier deserializes untrusted input, so unauthenticated visitors can inject PHP objects. The theme itself has no known gadget chain; impact (file deletion, data theft, code execution) depends on another plugin or theme on the site providing one. No patch exists yet.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- wordpress-theme:muzicon affected <= 1.15 fixed ?

## How to check

- WordPress admin: Appearance > Themes > Muzicon > Theme Details, or read 'Version:' in wp-content/themes/muzicon/style.css
- Version 1.15 or earlier is vulnerable; no fixed version exists yet
- Also check wp-content/themes and wp-content/plugins for other installed code, which supplies any usable gadget chain

## Fix

No fixed version released as of 2026-10-29 (Patchstack, WPScan: 'no known fix'). Until one ships, deactivate and replace the Muzicon theme, or put a WAF/virtual-patch rule in front of the site.

## Timeline

- 2026-10-29T16:26:00+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-62005
- 2026-10-29T16:29:34+00:00 analyst — Primary vendor advisory not found; NVD page unreadable via web-cli. Details from Patchstack (CVSS 9.8, no official patch) and WPScan/Wordfence (CVSS 8.1, AC:H since no POP chain in theme, no known fix). No exploitation or PoC seen. Nothing verified, since these are third-party databases. Severity kept critical per NVD/Patchstack 9.8 but Wordfence rates 8.1 high. Part of a mass disclosure of ThemeREX-style theme POI bugs on 2026-10-12.

## Documents

- [advisory] Patchstack: Muzicon <= 1.15 PHP Object Injection https://patchstack.com/database/wordpress/theme/muzicon/vulnerability/wordpress-muzicon-theme-1-15-php-object-injection-vulnerability
- [advisory] WPScan: Muzicon <= 1.15 Unauthenticated PHP Object Injection https://wpscan.com/vulnerability/d423ff6e-98a9-40d7-9ba7-10a88ae00225/

## From the sources

Unauthenticated PHP Object Injection in Muzicon <= 1.15 versions.

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