Is Simple User Capabilities safe to use?

Laskyr does not give safety verdicts. Simple User Capabilities is closed on wordpress.org. Closed on 2025-10-30 (reason given: Security Issue). Closed plugins get no updates through WordPress, so new security holes will not be fixed for you. Keep Simple User Capabilities on the latest version and remove it if you do not use it.

Which versions of Simple User Capabilities are vulnerable?

Known issues on record (newest first): Privilege escalation (1.0 and older); Missing authorization check (1.0 and older). The full list with sources is on this page.

What should I do if my Simple User Capabilities is out of date?

Take a backup, then update it from Dashboard > Updates (or run wp plugin update simple-user-capabilities). If you cannot update right away, deactivate it until you can. If you think the site was already attacked, run a free scan at https://laskyr.com/scan.

Plugins · simple-user-capabilities · data as of 2026-11-04

Is Simple User Capabilities safe? Known vulnerabilities and latest version

Status: Closed 2025-10-30
Known issues on record: 2
Unpatched in latest: 0

What to do

Replace it. A closed plugin gets no updates through WordPress, so any hole found from now on stays open.
Deactivate and delete it once you have a replacement (Plugins → Deactivate → Delete). Deleting removes its files; deactivating alone leaves them on the server.
If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan, or have us clean it: Emergency Cleanup, $499.

With WP-CLI, once you have a replacement: wp plugin deactivate simple-user-capabilities && wp plugin delete simple-user-capabilities

Check your version

Known vulnerabilities

2 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version. 2 record(s) do not state which versions are affected.

critical 9.8 CVE-2025-12158 · published 2025-11-04

Privilege escalation in Simple User Capabilities (1.0 and older)

Affected: 1.0 and older
Fixed in: unknown
Access needed (per CVSS): No login needed
Range from: CVE record (the advisory publisher) · score by Wordfence

Details from the advisory

The Simple User Capabilities plugin for WordPress is vulnerable to Privilege Escalation due to a missing capability check on the suc_submit_capabilities() function in all versions up to, and including, 1.0. This makes it possible for unauthenticated attackers to elevate the role of any user account to administrator.

NVD CVE-2025-12158 Wordfence advisory wordpress.org plugins.svn.wordpress.org

medium 5.3 CVE-2025-12157 · published 2025-11-04

Missing authorization check in Simple User Capabilities (1.0 and older)

Affected: 1.0 and older
Fixed in: unknown
Access needed (per CVSS): No login needed
Range from: CVE record (the advisory publisher) · score by Wordfence

Details from the advisory

The Simple User Capabilities plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'wp_ajax_nopriv_reset_capability' AJAX endpoint in all versions up to, and including, 1.0. This makes it possible for unauthenticated attackers to reset any user's capabilities.

NVD CVE-2025-12157 Wordfence advisory wordpress.org plugins.svn.wordpress.org

Recent activity

2025-10-30 — closed on wordpress.org (Security Issue).
2025-11-04 — Privilege escalation disclosed (CVE-2025-12158), fix version not stated.
2025-11-04 — Missing authorization check disclosed (CVE-2025-12157), fix version not stated.

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Browse vulnerabilities

Types found in this plugin: Privilege escalation (1) · Missing authorization (1)

Where this data comes from

Version, last update, installs, closure: wordpress.org/plugins/simple-user-capabilities (Plugins API), fetched 2026-11-04.
Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.

Badge for your site or docs (states facts with a date, not a verdict):

<a href="https://laskyr.com/plugins/simple-user-capabilities"><img src="https://laskyr.com/plugins/simple-user-capabilities/badge.svg" alt="Simple User Capabilities vulnerability status"></a>

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