{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/quick-playground-plugin-for-wordpress/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":7.5,"id":"CVE-2026-6403"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Quick Playground plugin for WordPress"],"_cs_severities":["high"],"_cs_tags":["path-traversal","wordpress","cve-2026-6403","initial-access"],"_cs_type":"advisory","_cs_vendors":["WordPress"],"content_html":"\u003cp\u003eThe Quick Playground plugin for WordPress, specifically versions up to and including 1.3.3, contains a path traversal vulnerability identified as CVE-2026-6403. This flaw resides in the \u003ccode\u003eqckply_zip_theme()\u003c/code\u003e function, where insufficient validation of the user-controlled \u0026lsquo;stylesheet\u0026rsquo; parameter enables unauthenticated attackers to manipulate the path used for ZIP archive creation. By injecting directory traversal sequences (e.g., \u0026ldquo;../\u0026rdquo;) into the \u0026lsquo;stylesheet\u0026rsquo; parameter, attackers can access and include arbitrary files from the server\u0026rsquo;s filesystem in the generated ZIP archive. A successful exploit can lead to the exposure of sensitive data, including the WordPress configuration file (\u003ccode\u003ewp-config.php\u003c/code\u003e), which contains database credentials and other critical information.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe unauthenticated attacker identifies a WordPress site using the vulnerable Quick Playground plugin (version \u0026lt;= 1.3.3).\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request targeting the \u003ccode\u003eqckply_zip_theme()\u003c/code\u003e function, likely through a GET or POST parameter named \u0026lsquo;stylesheet\u0026rsquo;.\u003c/li\u003e\n\u003cli\u003eThe \u0026lsquo;stylesheet\u0026rsquo; parameter contains directory traversal sequences (e.g., \u003ccode\u003e../../../../\u003c/code\u003e) followed by the path to the target file (e.g., \u003ccode\u003ewp-config.php\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003eThe vulnerable \u003ccode\u003eqckply_zip_theme()\u003c/code\u003e function appends the unsanitized \u0026lsquo;stylesheet\u0026rsquo; parameter to the theme root directory path.\u003c/li\u003e\n\u003cli\u003eThe application creates a ZIP archive, incorporating the file specified through the path traversal.\u003c/li\u003e\n\u003cli\u003eThe attacker downloads the generated ZIP archive, likely via a response from the server.\u003c/li\u003e\n\u003cli\u003eThe attacker extracts the downloaded ZIP archive to access the arbitrarily included file, such as \u003ccode\u003ewp-config.php\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eThe attacker retrieves sensitive information, such as database credentials, from the exposed \u003ccode\u003ewp-config.php\u003c/code\u003e file, leading to potential compromise of the WordPress database and the entire site.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-6403 allows an unauthenticated attacker to read arbitrary files from the WordPress server. A primary target is the \u003ccode\u003ewp-config.php\u003c/code\u003e file, which contains sensitive database credentials. Compromise of these credentials can lead to a full takeover of the WordPress database, allowing the attacker to modify content, inject malicious code, or exfiltrate data. Given the widespread use of WordPress, a successful exploit against a vulnerable site can have significant consequences, including data breaches, website defacement, and malware distribution.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade the Quick Playground plugin for WordPress to a version greater than 1.3.3 to patch CVE-2026-6403.\u003c/li\u003e\n\u003cli\u003eDeploy the provided Sigma rule \u003ccode\u003eDetect CVE-2026-6403 WordPress Quick Playground Path Traversal\u003c/code\u003e to identify potential exploitation attempts in web server logs.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for HTTP requests containing directory traversal sequences (e.g., \u0026ldquo;../\u0026rdquo;) in the \u003ccode\u003ecs-uri-query\u003c/code\u003e field targeting the Quick Playground plugin endpoints, as indicated in the attack chain.\u003c/li\u003e\n\u003cli\u003eImplement proper input validation and sanitization for all user-supplied parameters, especially those used in file path construction, to prevent path traversal vulnerabilities.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-15T09:19:08Z","date_published":"2026-05-15T09:19:08Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-6403-wordpress-path-traversal/","summary":"The Quick Playground plugin for WordPress, versions up to 1.3.3, is vulnerable to a path traversal vulnerability (CVE-2026-6403) in the qckply_zip_theme() function, allowing unauthenticated attackers to create ZIP archives containing arbitrary server files, including wp-config.","title":"CVE-2026-6403: Quick Playground Plugin for WordPress Path Traversal Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-6403-wordpress-path-traversal/"}],"language":"en","title":"CraftedSignal Threat Feed — Quick Playground Plugin for WordPress","version":"https://jsonfeed.org/version/1.1"}