CVE-2026-4089

The Twittee Text Tweet plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' shortcode attribute in all versions up to and including 1.0.8. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The ttt_twittee_tweeter() function uses extract() to pull shortcode attributes into local variables and then directly concatenates them into HTML output without any escaping. Specifically, the $id parameter is inserted into an HTML id attribute context without esc_attr(), allowing an attacker to break out of the attribute and inject arbitrary HTML event handlers. Additionally, the $tweet, $content, $balloon, and $theme attributes are similarly injected into inline JavaScript without escaping (lines 87, 93, 101, 117). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

• CWE-79

• https://plugins.trac.wordpress.org/browser/twittee-text-tweet/tags/1.0.8/ttt-twittee-text-tweet.php#L55
• https://plugins.trac.wordpress.org/browser/twittee-text-tweet/tags/1.0.8/ttt-twittee-text-tweet.php#L87
• https://plugins.trac.wordpress.org/browser/twittee-text-tweet/trunk/ttt-twittee-text-tweet.php#L55
• https://plugins.trac.wordpress.org/browser/twittee-text-tweet/trunk/ttt-twittee-text-tweet.php#L87
• https://www.wordfence.com/threat-intel/vulnerabilities/id/4d678e97-f466-4640-83ee-a3a24550e8d8?source=cve

Published

Apr 22, 2026

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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