Essentialplugin Plugins (Various Versions) - Injected Backdoor
critical
All plugins by Essentialplugin for WordPress are vulnerable to an injected backdoor in various versions. This is due to the plugin being sold to a malicious threat actor that embedded a backdoor in all of the plugin's they acquired. This makes it possible for the threat actor to maintain a persistent backdoor and injec...
- CVSS:
- 9.8
- Affected:
- 5.0.6 – 5.0.6
- Fixed in:
- 5.0.6.1
- Disclosed:
- Apr 9, 2026
CVE-2026-6443 on NVD →
Multiple WPOnlineSupport Plugins <= (Various Versions) - Missing Authorization to Notice Dismissal
medium
Multiple WPOnlineSupport plugins for WordPress are vulnerable to unauthorized modification of data due to a missing capability check on the wpos_anylc_admin_init_process() function hooked via admin_init in various versions. This makes it possible for unauthenticated attackers to dismiss a license notice.
- CVSS:
- 5.3
- Affected:
- up to 4.8
- Fixed in:
- 4.9
- Disclosed:
- Aug 16, 2023
CVE-2023-40200 on NVD →
Freemius SDK <= 2.5.9 - Reflected Cross-Site Scripting via fs_request_get
medium
The Freemius SDK for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘fs_request_get’ function in versions up to, and including, 2.5.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute...
- CVSS:
- 6.1
- Affected:
- up to 4.0
- Fixed in:
- 4.0.1
- Disclosed:
- Jul 18, 2023
CVE-2023-33999 on NVD →
WP News and Scrolling Widgets [sp-news-and-widget] < 4.2
unknown
** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.
- Affected:
- up to 4.2
- Fixed in:
- 4.2
CVE-2023-33999 on NVD →
WP News and Scrolling Widgets [sp-news-and-widget] < 4.9
unknown
** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.
- Affected:
- up to 4.9
- Fixed in:
- 4.9
CVE-2023-40200 on NVD →
Protect your WordPress site
Run a free security scan to detect vulnerable plugins and themes, exposed files, and malware — no plugin install, no signup.
Scan your site free
← Back to the vulnerability database