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Stored cross-site scripting in the Contact Form by Supsystic WordPress plugin (all versions ≤1.10.2) allows unauthenticated attackers to inject persistent malicious scripts via a spoofed IP address header. The exploit chain is notable for its two-stage unauthenticated entry: the plugin's `updateNonce` action is excluded from the permission-check list, granting any unauthenticated caller a valid WordPress nonce; that nonce is then used to submit a contact form with a crafted `X-Forwarded-For` value, which the plugin stores unsanitized and later renders in the admin contacts list. No public exploit has been identified at time of analysis and no KEV listing exists, but the Wordfence advisory includes direct source-code references to the vulnerable code paths.
Privilege escalation in the Smart Popup by Supsystic WordPress plugin (all versions through 1.12.0) enables unauthenticated remote attackers to create persistent WordPress Administrator accounts with attacker-controlled credentials. Three compounding flaws are chained: a PHP `array_merge()` collision silently removes the `save` action from the popup module's permission blocklist, the subscription confirmation email leaks a reusable `pps_nonce` that the `wp_ajax_nopriv_save` endpoint accepts, and `createWpSubscriber()` applies no server-side role allowlist - allowing an attacker to freely set `params[tpl][sub_wp_create_user_role]=administrator`. No public exploit or CISA KEV listing is confirmed at time of analysis, but the attack chain is fully described in the CVE and the low complexity makes independent weaponization likely.
Remote code execution in Contact Form by Supsystic plugin for WordPress (all versions ≤1.7.36) allows unauthenticated attackers to execute arbitrary PHP functions and OS commands via Server-Side Template Injection. Attackers exploit the plugin's unsandboxed Twig template engine by injecting malicious Twig expressions through GET parameters in the cfsPreFill functionality, leveraging registerUndefinedFilterCallback() to register arbitrary PHP callbacks. CVSS 9.8 (Critical) with network-accessible, low-complexity attack vector requiring no authentication. EPSS data not provided, but the combination of unauthenticated RCE in a widely-deployed WordPress plugin represents severe real-world risk. No KEV status confirmed at time of analysis.
Stored cross-site scripting in the Contact Form by Supsystic WordPress plugin (all versions ≤1.10.2) allows unauthenticated attackers to inject persistent malicious scripts via a spoofed IP address header. The exploit chain is notable for its two-stage unauthenticated entry: the plugin's `updateNonce` action is excluded from the permission-check list, granting any unauthenticated caller a valid WordPress nonce; that nonce is then used to submit a contact form with a crafted `X-Forwarded-For` value, which the plugin stores unsanitized and later renders in the admin contacts list. No public exploit has been identified at time of analysis and no KEV listing exists, but the Wordfence advisory includes direct source-code references to the vulnerable code paths.
Privilege escalation in the Smart Popup by Supsystic WordPress plugin (all versions through 1.12.0) enables unauthenticated remote attackers to create persistent WordPress Administrator accounts with attacker-controlled credentials. Three compounding flaws are chained: a PHP `array_merge()` collision silently removes the `save` action from the popup module's permission blocklist, the subscription confirmation email leaks a reusable `pps_nonce` that the `wp_ajax_nopriv_save` endpoint accepts, and `createWpSubscriber()` applies no server-side role allowlist - allowing an attacker to freely set `params[tpl][sub_wp_create_user_role]=administrator`. No public exploit or CISA KEV listing is confirmed at time of analysis, but the attack chain is fully described in the CVE and the low complexity makes independent weaponization likely.
Remote code execution in Contact Form by Supsystic plugin for WordPress (all versions ≤1.7.36) allows unauthenticated attackers to execute arbitrary PHP functions and OS commands via Server-Side Template Injection. Attackers exploit the plugin's unsandboxed Twig template engine by injecting malicious Twig expressions through GET parameters in the cfsPreFill functionality, leveraging registerUndefinedFilterCallback() to register arbitrary PHP callbacks. CVSS 9.8 (Critical) with network-accessible, low-complexity attack vector requiring no authentication. EPSS data not provided, but the combination of unauthenticated RCE in a widely-deployed WordPress plugin represents severe real-world risk. No KEV status confirmed at time of analysis.