Vulnerabilities / WPChat / WPSEC-2026-3064
WPChat <= 1.4.5 - Unauthenticated Missing Authorization to API Access Token Update
Medium 5.3
CWE-862Fixed in 1.4.6
- ID
- WPSEC-2026-3064
- Plugin
- WPChat – Live Chat & Messaging Widget for Customer Support (smashballoon-wpchat-livechat-customer-support)
- Affected
- all versions before 1.4.6
- Remediation
- Update to 1.4.6 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-862
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-11-13
- Attack surface
- WPChat on WPSec AttackSurface
- Fix released
- Published
Description
The WPChat plugin for WordPress is vulnerable to unauthorized modification of data in all versions up to, and including, 1.4.5 due to a missing capability check and nonce verification on the handleAccessToken function. The function is hooked to admin_init, which also runs for unauthenticated requests to admin-post.php. This makes it possible for unauthenticated attackers to overwrite the site's WPChat Smart Search API access token with a value of their choosing, or to do the same by tricking an administrator into clicking a crafted link.
References
- https://wpsec.com/vuln/WPSEC-2026-3064/
- https://plugins.svn.wordpress.org/smashballoon-wpchat-livechat-customer-support/tags/1.4.6/
- https://wordpress.org/plugins/smashballoon-wpchat-livechat-customer-support/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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