What is the CVSS score of CVE-2026-6203?

CVE-2026-6203 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2026-6203?

Yes, a public proof-of-concept exploit is available for CVE-2026-6203. Prioritise patching immediately. EPSS: 0.0%.

Open Redirect CVE-2026-6203

EUVD-2026-22135 MEDIUM

URL Redirection to Untrusted Site (Open Redirect) (CWE-601)

2026-04-13 Wordfence

GHSA-2vmw-qjp2-rr96

Open Redirect WordPress

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

EUVD ID Assigned

Apr 13, 2026 - 22:45 euvd

EUVD-2026-22135

CVE Published

Apr 13, 2026 - 22:25 nvd

MEDIUM 6.1

DescriptionCVE.org

The User Registration & Membership plugin for WordPress is vulnerable to Open Redirect in versions up to and including 5.1.4. This is due to insufficient validation of user-supplied URLs passed via the 'redirect_to_on_logout' GET parameter before redirecting users. The redirect_to_on_logout GET parameter is passed directly to WordPress's wp_redirect() function instead of the domain-restricted wp_safe_redirect(). While esc_url_raw() is applied to sanitize malformed URLs, it does not restrict the redirect destination to the local domain, allowing an attacker to craft a specially formed link that redirects users to potentially malicious external URLs after logout, which could be used to facilitate phishing attacks.

Analysis

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CVE-2026-6203 vulnerability details – vuln.today

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