---
id: "CVE-2026-121776"
page: "https://infrastack.ai/live/CVE-2026-121776"
kind: "vulnerability"
aliases: ["CVE-2026-121776"]
title: "WordPress Passster plugin: missing authorization lets visitors bypass content protection"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "passster", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["package", "passster", "self-hosted", "wordpress"]
not_affected_if: ["newer-version", "plugin-not-installed"]
published_at: "2026-11-13T15:17:33+00:00"
first_seen_at: "2026-11-13T15:46:16+00:00"
updated_at: "2026-11-13T15:48:54+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121776", "first_seen_at": "2026-11-13T15:46:16+00:00"}]
exploit_sources: []
---

# WordPress Passster plugin: missing authorization lets visitors bypass content protection

Link for people: https://infrastack.ai/live/CVE-2026-121776 (this .md is for agents)

The Passster content-protector plugin for WordPress has a missing authorization check, described as exploiting incorrectly configured access control levels. An attacker may be able to reach content that the site owner meant to lock behind a password or access rule.

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

## Affected

- vendor:passster affected range not listed fixed no fixed version listed

## How to check

- Check whether the WordPress site runs the Passster plugin and read its installed version in the plugin list
- Compare the installed version with the affected range: Passster through `4.3.20`

## Fix

- Passster: a version newer than `4.3.20` (the sources do not name the fixed release)

## Timeline

- 2026-11-13T15:46:16+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121776

## From the sources

Missing Authorization vulnerability in WP Chill Passster content-protector allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Passster: from n/a through 4.3.20.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_