Vulnerability Database

413,718

Total vulnerabilities in the database

CVE-2026-120070

Improper Privilege Management

The User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.3.13 via the post_content parameter of the submit_post() function. The vulnerability exists because the protected-shortcode blocklist guard inspects the sanitize_textarea_field() copy of the submitted post_content, while the copy actually persisted to the database is processed through wp_kses(), whose wp_kses_no_null() step strips C0 control bytes — allowing an attacker to inject a single \x01 byte inside the [wpuf-registration] tag name to defeat the strpos() blocklist check while the clean, functional shortcode is stored verbatim; strip_shortcodes() does not neutralize the stored shortcode either, because the Frontend container that registers it via add_shortcode() is only instantiated when is_admin() is false, and admin-ajax requests have is_admin() === true. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject a [wpuf-registration role="editor"] shortcode into a published post, causing a live Editor-role registration form to be rendered publicly on the frontend that any visitor — or the attacker themselves — can submit to mint a WordPress Editor account with an immediately active privileged session when the default autologin_after_registration setting is enabled.

  • Published: Oct 31, 2026
  • Updated: Nov 8, 2026
  • CVE: CVE-2026-120070
  • Severity: High
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: High
  • Score: 8.8
  • AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWEs:

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Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.