Is CVE-2026-4136 in the CISA KEV catalog?

No. CVE-2026-4136 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-4136?

CVE-2026-4136 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2026-4136?

CVE-2026-4136 has an EPSS score of 0.20% (10th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-4136?

No published fix for CVE-2026-4136 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-4136

MEDIUM

4.3

CVSS v3

NVD

Description

The Membership Plugin – Restrict Content plugin for WordPress is vulnerable to Unvalidated Redirect in all versions up to, and including, 3.2.24. This is due to insufficient validation on the redirect url supplied via the 'rcp_redirect' parameter. This makes it possible for unauthenticated attackers to redirect users with the password reset email to potentially malicious sites if they can successfully trick them into performing an action.

CWE-640

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.20%probability of exploitation in 30 days

10thpercentile

Low risk: more likely to be exploited than 10% of all known CVEs.

References

Other references3

Embed a live status badge for CVE-2026-4136

Markdown

[![CVE-2026-4136](https://tridentstack.com/cve/badge/CVE-2026-4136.svg)](https://tridentstack.com/cve/CVE-2026-4136)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-4136"><img src="https://tridentstack.com/cve/badge/CVE-2026-4136.svg" alt="CVE-2026-4136"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.