WordPress plugin · simple-membership
Is Simple Membership safe?
Safe on 4.8.6 or newer.
The current version, 4.8.6, is past every affected range on record (37 of 37 records list one). Keep it updated and you’re clear of them.
- Flaws on record
- 37
- High or critical
- 13
- Exploited
- none
- Current version
- 4.8.6
- Last updated
- Oct 21, 2026
- Active installs
- 40,000+
Every recorded flaw
- Oct 11, 2026Simple Membership: Does not avoid transmitting a newly registered member's plaintext password in a URL query stringCVE-2026-88785 · fixed in 4.8.3 · reported by WPScanMedium 4.7
- Oct 10, 2026Simple Membership: Stored Cross-Site ScriptingCVE-2026-103427 · affects up to 4.8.4 · reported by WordfenceMedium 6.4
- Oct 3, 2026Simple Membership: Unauthorized modification of data and sensitive information disclosureCVE-2026-97337 · affects up to 4.8.3 · reported by WordfenceHigh 7.5
- Sep 17, 2026Contributor Broken Access Control in Simple Membership <= 4.8.2 versions.CVE-2026-74000 · affects up to 4.8.2 · reported by PatchstackMedium 5.3
- Sep 13, 2026Simple Membership: Does not validate that the membership level supplied in a PayPal payment notification matches the level configured for the paid payment buttonCVE-2026-88764 · fixed in 4.7.8 · reported by WPScanMedium 5.4
- Sep 1, 2026Simple Membership: Authentication Bypass leading to Administrator Account TakeoverCVE-2026-77194 · affects up to 4.8.0 · reported by WordfenceMedium 5.3
- Aug 6, 2026Simple Membership: Does not verify that a PayPal payment notification was sent to the site's own configured merchant account before activating a membershipCVE-2026-14936 · fixed in 4.7.7 · reported by WPScanMedium 5.3
- Aug 6, 2026Unauthenticated Broken Access Control in Simple Membership <= 4.7.8 versions.CVE-2026-66712 · affects up to 4.7.8 · reported by PatchstackHigh 7.5
- Aug 3, 2026Simple Membership: Does not sanitise a subscriber name value received from an unauthenticated payment approval requestCVE-2026-15931 · fixed in 4.7.8 · reported by WPScanMedium 6.1
- Aug 3, 2026Simple Membership: Does not verify whether user creation failed during registration before using the returned valueCVE-2026-15930 · fixed in 4.7.8 · reported by WPScanCritical 9.4
- Jul 6, 2026Simple Membership: Does not verify the authenticity of Stripe webhook requestsCVE-2026-11855 · fixed in 4.7.5 · reported by WPScanHigh 8.8
- Jun 18, 2026Simple Membership: Authorization bypassCVE-2026-12093 · affects up to 4.7.5 · reported by WordfenceMedium 5.3
- Jun 15, 2026Unauthenticated Cross Site Scripting (XSS) in Simple Membership <= 4.7.2 versions.CVE-2026-42663 · affects up to 4.7.2 · reported by PatchstackMedium 6.5
- Jun 15, 2026Unauthenticated Broken Access Control in Simple Membership <= 4.7.1 versions.CVE-2026-34886 · affects up to 4.7.1 · reported by PatchstackHigh 7.5
- Feb 19, 2026Simple Membership: Improper Handling of Missing ValuesCVE-2026-1461 · affects up to 4.7.0 · reported by WordfenceMedium 6.5
- Feb 19, 2026Simple Membership: Missing AuthorizationCVE-2026-25308 · affects up to 4.6.9 · reported by PatchstackMedium 4.3
- Jun 6, 2025Simple Membership: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2025-49333 · affects up to 4.6.3 · reported by PatchstackMedium 5.9
- Nov 21, 2024Simple Membership: Sensitive Information ExposureCVE-2024-11088 · affects up to 4.5.5 · reported by WordfenceMedium 5.3
- Oct 24, 2024Simple Membership: URL Redirection to Untrusted Site ('Open Redirect')CVE-2024-49682 · affects up to 4.5.3 · reported by PatchstackMedium 4.7
- May 17, 2024Simple Membership: Improper Privilege ManagementCVE-2023-41957 · affects up to 4.3.4 · reported by PatchstackHigh 8.6
- May 17, 2024Simple Membership: Improper AuthenticationCVE-2023-41956 · affects up to 4.3.4 · reported by PatchstackHigh 8.8
- May 14, 2024Simple Membership: Stored Cross-Site ScriptingCVE-2024-4383 · affects up to 4.4.5 · reported by WordfenceMedium 6.4
- Apr 25, 2024Simple Membership: Stored Cross-Site ScriptingCVE-2024-3730 · affects up to 4.4.3 · reported by WordfenceMedium 5.4
- Mar 13, 2024Simple Membership: Stored Cross-Site ScriptingCVE-2024-1985 · affects up to 4.4.2 · reported by WordfenceMedium 4.7
- Jan 24, 2024Simple Membership: URL Redirection to Untrusted Site ('Open Redirect')CVE-2024-22308 · affects up to 4.4.1 · reported by PatchstackLow 3.4
- Jan 11, 2024Simple Membership: Reflected Cross-Site ScriptingCVE-2023-6882 · affects up to 4.3.8 · reported by WordfenceMedium 6.1
- Dec 19, 2023Simple Membership: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2023-50376 · affects up to 4.3.8 · reported by PatchstackHigh 7.1
- Sep 5, 2023Simple Membership: Reflected Cross-Site ScriptingCVE-2023-4719 · affects up to 4.3.5 · reported by WordfenceHigh 7.2
- Jan 16, 2023Simple Membership: Does not validate and escape some of its shortcode attributes before outputting them back in the pageCVE-2022-4469 · fixed in 4.2.2 · reported by WPScanMedium 5.4
- Aug 1, 2022Simple Membership: Allows user to change their membership at the registration stage due to insufficient checking of a user supplied parameterCVE-2022-2317 · fixed in 4.1.3 · reported by WPScan1.4% oddsCritical 9.8
- Aug 1, 2022Simple Membership: Does not properly validate the membership_level parameterCVE-2022-2273 · fixed in 4.1.3 · reported by WPScan1.2% oddsHigh 8.8
- Jun 13, 2022Simple Membership: Does not properly sanitise and escape parameters before outputting them back in AJAX actionsCVE-2022-1724 · fixed in 4.1.1 · reported by WPScan1.8% oddsMedium 6.1
- Mar 21, 2022Simple Membership: Does not have CSRF check in placeCVE-2022-0681 · fixed in 4.1.0 · reported by WPScanMedium 6.5
- Feb 28, 2022Simple Membership: Does not have CSRF checkCVE-2022-0328 · fixed in 4.0.9 · reported by WPScanMedium 4.7
- Aug 14, 2019The simple-membership plugin before 3.3.3 for WordPress has multiple CSRF issues.CVE-2016-10884 · fixed in 3.3.3 · reported by MITREHigh 8.8
- Aug 12, 2019The simple-membership plugin before 3.5.7 for WordPress has XSS.CVE-2017-18499 · fixed in 3.5.7 · reported by MITREMedium 6.1
- Jul 28, 2019The Simple Membership plugin before 3.8.5 for WordPress has CSRF affecting the Bulk Operation section.CVE-2019-14328 · fixed in 3.8.5 · reported by MITRE3.1% oddsHigh 8.8
Records come from the National Vulnerability Database, published by the researchers who found each flaw (Wordfence, Patchstack, WPScan and others); exploited status from CISA; exploit odds from FIRST’s EPSS; current version, installs and closures from wordpress.org, checked daily. Want every plugin on your site checked at once? Run the free website check.
Weekly security brief
The flaws that hit local websites, every Friday.
One short email: what got exploited this week, which WordPress plugins broke, and what to check. Unsubscribe in one click.
Get in touch
Tell us what you're building.
A website, your marketing, a security check, an app, or the thing you've been running out of a spreadsheet for three years. A few lines is plenty.
01The person who'll do the work writes back
02A short call, then a written plan with the price
03Nothing starts until you say yes
04Hacked or down right now? Call, and we pick up the same day
Not ready to talk yet? Run the free website check and see what Google sees.