Appsero <= 2.0.0 - Missing Authorization via handle_optin_optout
The Appsero analytics tool used in several plugins is vulnerable to unauthorized modification of data due to a missing capability check on the handle_optin_optout function in versions up to, and including, 2.0.0. This makes it possible for unauthenticated attackers to opt-in or opt-out of tracking. This was patched in version 2.0.1 of Appsero with a nonce check.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Load More Anything | <= 3.3.5 | 3.3.6 |
| WordPress plugin | Boostify Header Footer Builder for Elementor | <= 1.3.1 | 1.3.2 |
| WordPress plugin | ChatHelp – Click to Chat Button, Chat to Order for WooCommerce & Floating Chat Form | <= 1.4.9 | 1.6.0 |
| WordPress plugin | Chat Support for Viber – Chat Bubble and Chat Button for Gutenberg, Elementor and Shortcode | <= 1.7.7 | no fix |
| WordPress plugin | Click To Dial – Wp Click To Call Support | <= 1.2.9 | no fix |
| WordPress plugin | Click To Email – Chat Bubble & Mail Button for WP | <= 1.2.8 | no fix |
| WordPress plugin | Duplicate Page, Hide Title, Custom CSS & JS, Exclude Search, Template Info – Pagely | <= 1.1.12 | 1.1.13 |
| WordPress plugin | Dashboard Welcome for Elementor | <= 1.0.7 | 1.0.8 |
| WordPress plugin | Easy Table Rate Shipping for WooCommmerce | <= 1.3.0 | no fix |
| WordPress plugin | Events Slider, Events Carousel, Events Grid, Events Timeline and Events Filter Bar for The Events Calendar – Eventful | <= 2.1.7 | no fix |
| WordPress plugin | Exclusive Addons for Elementor | <= 2.6.9 | 2.6.9.1 |
| WordPress plugin | Happy FAQs – WordPress FAQ and Product FAQ | <= 1.5.0 | 1.5.1 |
| WordPress plugin | Gallery Box | <= 1.7.33 | 1.7.34 |
| WordPress plugin | IDonate – Blood Donation, Request And Donor Management System | <= 2.1.15 | no fix |
| WordPress plugin | Event Booking Manager for WooCommerce – Sell Tickets, Event Registration, RSVP & Event Calendar | <= 4.1.2 | 4.1.3 |
| WordPress plugin | GS Posts Widget | <= 1.2.9 | no fix |
| WordPress plugin | FlexTable – Data Table Sync with Google Sheets | <= 3.5.0 | 3.5.1 |
| WordPress plugin | Subscribe2 – Form, Email Subscribers & Newsletters | <= 10.42 | 10.43 |
| WordPress plugin | TOP Table Of Contents | <= 1.3.15 | 1.3.16 |
| WordPress plugin | Prime Elementor Addons – Lightweight Elementor Widgets for Faster Pages | <= 1.0.4 | 1.0.5 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-862- Platform
- WordPress
- Package
Load More Anything, Boostify Header Footer Builder for Elementor, ChatHelp – Click to Chat Button, Chat to Order for WooCommerce & Floating Chat Form- Disclosed
- 11.04.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 376c5091-7921-4470-acbf-44db53db38fc - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Duplicate Page, Hide Title, Custom CSS & JS, Exclude Search, Template Info – Pagely
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 07.2023 10.2025
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- Medium 4
Disclosures per year
- 2023: 1
- 2024: 1
- 2025: 2
- 2026: 0
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Appsero <= 2.0.0 - Missing Authorization via handle_optin_optout this entry
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