---
id: "CVE-2026-54858"
kind: "vulnerability"
aliases: ["CVE-2026-54858"]
title: "Printy WordPress plugin: unauthenticated PHP object injection up to 1.13.0"
severity: "critical"
cvss: 9.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "php", "printy", "wordpress"]
not_affected_if: ["plugin-not-installed", "version-above-1.13.0"]
published_at: "2026-10-29T16:18:09+00:00"
first_seen_at: "2026-10-29T16:25:59+00:00"
updated_at: "2026-10-29T16:27:40+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54858", "first_seen_at": "2026-10-29T16:25:59+00:00"}]
---

# Printy WordPress plugin: unauthenticated PHP object injection up to 1.13.0

Printy versions up to 1.13.0 accept attacker-supplied serialized PHP data without authentication. A remote attacker can use PHP object injection to potentially run code or reach sensitive data on the server.

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

## How to check

- Check the installed Printy version in the plugin list or the plugin's main file header; versions `1.13.0` and older are listed as affected.

## Fix

- Move Printy past `1.13.0`; the sources do not name the fixed version.

## Timeline

- 2026-10-29T16:25:59+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-54858

## From the sources

Unauthenticated PHP Object Injection in Printy <= 1.13.0 versions.

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