🚨 CVE-2016-1000127 : WORDPRESS PLUGIN XSS ALERT 🚨 A reflected cross-site scripting (XSS) vulnerability has been disclosed in the Ajax Random Post WordPress plugin. The flaw allows unauthenticated attackers to inject arbitrary JavaScript via crafted URLs, which executes when a logged-in administrator interacts with the malicious link. - Risk Severity: - Medium (CVSS 6.1, public proof-of-concept available, fix unavailable) Impact: - JavaScript execution in WordPress admin context - Session hijacking via theft of `wordpress_logged_in_*` cookies and nonces - Full administrative site takeover - Unauthorized plugin installation and configuration changes - Website defacement and persistent compromise - Pivoting attacks against site visitors Root Cause: - CWE-79 (Improper Neutralization of Input During Web Page Generation). The plugin’s AJAX handler fails to sanitize the `random_post_id` parameter before reflecting it in the response, enabling reflected XSS through the `admin-ajax.php` endpoint. Attackers can: - Craft malicious URLs targeting `admin-ajax.php?action=random_post` - Lure authenticated administrators via phishing or social engineering - Execute arbitrary JavaScript in the WordPress admin session - Steal session cookies, nonces, and credentials - Escalate privileges and persist via plugin or theme abuse Are You Affected? - Vulnerable: Ajax Random Post plugin v2.00 - Scope: Internet-facing WordPress sites with the plugin installed - Exposure amplified on sites without CSP headers or WAF protections - Status: Plugin permanently removed from Wordpress repository Immediate Action Required: - Remove: Completely delete the `ajax-random-post/` plugin directory — no patched version exists - Mitigation: If removal is delayed, deploy CSP headers and WAF rules blocking suspicious `random_post_id` patterns - Audit: Review web server and WordPress logs for malicious AJAX requests and anomalous admin activity Abandoned plugins remain a silent takeover vector. Remove legacy WordPress components immediately. 🛡️ #ostorlabCVE
Post summary
The post discloses a reflected XSS flaw in the Ajax Random Post WordPress plugin, details its impact and severity, and emphasizes removal of the unpatched plugin as the only mitigation.