WordPress security by component

Simple Membership

Plugin description

Simple Membership creates membership levels, protects content, manages member accounts, and controls access to WordPress site content.

Simple Membership (simple-membership) is a WordPress plugin with 32 published CVE records in this archive. The latest tracked vulnerability was published Sep 01, 2026; the highest published CVSS base score is 9.8.

Plugin slug: simple-membership

Latest vulnerability

CVE-2026-77194: Simple Membership permits unauthenticated Multisite Administrator takeover

Simple Membership through 4.8.1 can bind a new membership record to an existing global WordPress user using only a matching username and email, without password or ownership verification, and fails to recognize Administrator roles on child sites. On a Multisite child site with public registration enabled, an unauthenticated attacker can register with an Administrator's identity, use profile editing to replace the victim's global WordPress password, and take over the account. Version 4.8.1 only partially addresses the issue and remains in the affected range.

PublishedSep 01, 2026

Safe version guidanceSee mitigation notes

Published vulnerabilities for simple-membership
		Safe version
Sep 01, 2026	CVE-2026-77194 Simple Membership permits unauthenticated Multisite Administrator takeover Simple Membership through 4.8.1 can bind a new membership record to an existing global WordPress user using only a matching username and email, without password or ownership verification, and fails to recognize Administrator roles on child sites. On a Multisite child site with public registration enabled, an unauthenticated attacker can register with an Administrator's identity, use profile editing to replace the victim's global WordPress password, and take over the account. Version 4.8.1 only partially addresses the issue and remains in the affected range.	See mitigation notes	CVE5.3 NVDPending
Aug 06, 2026	CVE-2026-14936 Simple Membership accepts PayPal notifications for the wrong merchant before 4.7.7 Simple Membership before 4.7.7 processes a PayPal Standard IPN without verifying that its merchant or receiver email matches the site's configured PayPal account. An unauthenticated attacker can pay an account they control and use the notification to activate or extend a membership although the site owner received no payment. Version 4.7.7 adds merchant and receiver-email validation. The public IPN endpoint, exact parameter names, membership binding and handler function are not disclosed.	4.7.7	CVE5.3 NVDPending
Aug 06, 2026	CVE-2026-66712 Simple Membership permits unauthenticated access to protected functionality An unauthenticated visitor can reach a Simple Membership operation that lacks the required authorization check in version 4.7.8 and earlier.	4.7.9	CVE7.5 NVDPending
Aug 03, 2026	CVE-2026-15931 Simple Membership payment approvals let visitors store administrator XSS Simple Membership before 4.7.8 accepts a subscriber-name value from an unauthenticated payment-approval request, stores it without sanitization and renders it unescaped in the administration dashboard. An unauthenticated attacker can submit script-bearing subscriber data that executes when an Administrator views the affected record.	4.7.8	CVE6.1 NVDPending
Aug 03, 2026	CVE-2026-15930 Simple Membership registration failures can overwrite the primary Administrator Simple Membership before 4.7.8 does not verify whether WordPress user creation failed before treating the returned value as a user ID for an account update. An unauthenticated attacker can force the failure path so the plugin updates the primary Administrator's account data, including its email address, then use the password-reset flow to take over that account.	4.7.8	CVE9.4 NVDPending
Jul 06, 2026	CVE-2026-11855 Simple Membership: A security weakness Simple Membership is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is < 4.7.5.	4.7.5	CVE8.8 NVDPending
Jun 18, 2026	CVE-2026-12093 Simple Membership: A security weakness Simple Membership is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 4.7.5.	See mitigation notes	CVE5.3 NVDPending
Jun 15, 2026	CVE-2026-42663 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. The vulnerable path is reachable without authentication. Injected script can execute in the affected site's origin when the vulnerable output is viewed. The published affected range is n/a through 4.7.2.	4.7.3	CVE6.5 NVDPending
Jun 15, 2026	CVE-2026-34886 Simple Membership: Broken access control Simple Membership is affected by broken access control. The vulnerable path is reachable without authentication. A successful request can reach data or an operation that should be restricted to another user or a more privileged role. The published affected range is n/a through 4.7.1.	4.7.2	CVE7.5 NVDPending
Feb 19, 2026	CVE-2026-1461 Simple Membership: A security weakness Simple Membership is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation.	See mitigation notes	CVE6.5 NVDPending
Feb 19, 2026	CVE-2026-25308 Simple Membership: A security weakness Simple Membership is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation.	See mitigation notes	CVE4.3 NVDPending
Jun 06, 2025	CVE-2025-49333 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVE5.9 NVDPending
Nov 21, 2024	CVE-2024-11088 Simple Membership: Sensitive information exposure Simple Membership is affected by sensitive information exposure. The vulnerable path is reachable without authentication. Successful exploitation can disclose data that should not be available to the caller.	See mitigation notes	CVE5.3 NVD7.5
Oct 24, 2024	CVE-2024-49682 Simple Membership: An open redirect Simple Membership is affected by an open redirect. Exposure depends on how the affected operation is made reachable by the site. A crafted link can redirect visitors from the trusted site to an attacker-controlled destination.	See mitigation notes	CVE4.7 NVD6.1
May 17, 2024	CVE-2023-41957 Simple Membership: Privilege escalation or authentication bypass Simple Membership is affected by privilege escalation or authentication bypass. Exposure depends on how the affected operation is made reachable by the site. A successful request can grant permissions or access that the caller should not possess.	See mitigation notes	CVE8.6 NVD9.8
May 17, 2024	CVE-2023-41956 Simple Membership: A security weakness Simple Membership is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation.	See mitigation notes	CVE8.8 NVD8.8
May 14, 2024	CVE-2024-4383 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. Exploitation requires an authenticated contributor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVE6.4 NVD5.4
Apr 25, 2024	CVE-2024-3730 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. Exploitation requires an authenticated contributor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVE5.4 NVDPending
Mar 13, 2024	CVE-2024-1985 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. The vulnerable path is reachable without authentication. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVE4.7 NVD6.1
Jan 24, 2024	CVE-2024-22308 Simple Membership: An open redirect Simple Membership is affected by an open redirect. Exposure depends on how the affected operation is made reachable by the site. A crafted link can redirect visitors from the trusted site to an attacker-controlled destination.	See mitigation notes	CVE3.4 NVD6.1
Jan 11, 2024	CVE-2023-6882 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. The vulnerable path is reachable without authentication. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVE6.1 NVD6.1
Dec 19, 2023	CVE-2023-50376 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVE7.1 NVD6.1
Sep 06, 2023	CVE-2023-4719 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. The vulnerable path is reachable without authentication. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVE7.2 NVD6.1
Jan 16, 2023	CVE-2022-4469 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVE5.4 NVD5.4
Aug 01, 2022	CVE-2022-2317 Simple Membership: A security weakness Simple Membership is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation.	See mitigation notes	CVEPending NVD9.8
Aug 01, 2022	CVE-2022-2273 Simple Membership: A security weakness Simple Membership is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation.	See mitigation notes	CVEPending NVD8.8
Jun 13, 2022	CVE-2022-1724 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVEPending NVD6.1
Mar 21, 2022	CVE-2022-0681 Simple Membership: Cross-site request forgery Simple Membership is affected by cross-site request forgery. Exposure depends on how the affected operation is made reachable by the site. Exploitation relies on a signed-in privileged user submitting an attacker-controlled request.	See mitigation notes	CVEPending NVD6.5
Feb 28, 2022	CVE-2022-0328 Simple Membership: Cross-site request forgery Simple Membership is affected by cross-site request forgery. Exposure depends on how the affected operation is made reachable by the site. Exploitation relies on a signed-in privileged user submitting an attacker-controlled request.	See mitigation notes	CVEPending NVD4.7
Aug 14, 2019	CVE-2016-10884 Simple Membership: Cross-site request forgery Simple Membership is affected by cross-site request forgery. Exposure depends on how the affected operation is made reachable by the site. Exploitation relies on a signed-in privileged user submitting an attacker-controlled request.	See mitigation notes	CVEPending NVD8.8
Aug 12, 2019	CVE-2017-18499 Simple Membership: Cross-site scripting Simple Membership is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.	See mitigation notes	CVEPending NVD6.1
Jul 28, 2019	CVE-2019-14328 Simple Membership: Cross-site request forgery Simple Membership is affected by cross-site request forgery. Exposure depends on how the affected operation is made reachable by the site. Exploitation relies on a signed-in privileged user submitting an attacker-controlled request.	See mitigation notes	CVEPending NVD8.8

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