Missing authorization in WP OnlineSupport, Essential Plugin Essential Chat Support
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
The Essential Chat Support plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.0.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to reset all plugin configuration settings — including general settings, display rules, custom CSS, and WooCommerce tab settings — to their defaults by sending a POST request with ecs_reset_settings=1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| WP OnlineSupport, Essential Plugin | Essential Chat Support | up to 1.0.1 | — | No fix listed | CNA |
- Essential Chat Support VendorWP OnlineSupport, Essential Plugin Affected up to 1.0.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-8681
- 2026-10-03 Alias added: GHSA-4fcc-vrwx-v754
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6b98ea22-4c82-45c6-8e29-75cc9a9185be?source=cve
- https://plugins.trac.wordpress.org/browser/essential-chat-support/trunk/includes/admin/settings/register-settings.php#L47
- https://plugins.trac.wordpress.org/browser/essential-chat-support/trunk/includes/ecs-functions.php#L33
More WP OnlineSupport, Essential Plugin vulnerabilities
- TI-2022-04420 WP Blog and Widget < 2.3.1 - Contributor+ Stored XSS via Shortcode CVSS 3.1MEDIUM 5.4
- TI-2022-04387 Product Slider and Carousel with Category for WooCommerce < 2.8 - Contributor+ Stored XSS via Shortcode CVSS 3.1MEDIUM 5.4
- TI-2022-04343 Post Category Image With Grid and Slider < 1.4.8 - Contributor+ Stored XSS via Shortcode CVSS 3.1MEDIUM 5.4
- TI-2026-05651 Essentialplugin Plugins (Various Versions) - Injected Backdoor CVSS 3.1CRITICAL 9.8
- TI-2024-28885 WordPress Timeline and History slider plugin <= 2.3 - Local File Inclusion vulnerability CVSS 3.1HIGH 8.5
- TI-2024-03901 Album and Image Gallery plus Lightbox <= 2.0 - Unauthenticated Arbitrary Shortcode Execution CVSS 3.1HIGH 7.3
Sources
- CVE-2026-8681 · CVE Program
- CVE-2026-8681 · NVD
- FIRST EPSS
- GHSA-4fcc-vrwx-v754 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences