{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/tina-cms/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["path-traversal","tina-cms","CVE-2026-34603"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eTina CMS, a headless content management system, is susceptible to a path traversal vulnerability in versions prior to 2.2.2. The vulnerability, identified as CVE-2026-34603, stems from insufficient validation of symlink and junction targets within the \u003ccode\u003e@tinacms/cli\u003c/code\u003e media routes. Although lexical path-traversal checks were implemented, they only validate the path string without resolving symlinks or junctions. This flaw enables attackers to bypass intended security measures and perform unauthorized file system operations, potentially leading to sensitive data exposure or system compromise. This vulnerability has been addressed in version 2.2.2. Defenders should prioritize upgrading to the patched version to mitigate the risk.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a Tina CMS instance running a version prior to 2.2.2.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious HTTP request targeting a media route.\u003c/li\u003e\n\u003cli\u003eThe crafted request includes a path containing a symlink or junction pointing outside the intended media root directory (e.g., \u003ccode\u003epivot/written-from-media.txt\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003eTina CMS validates the path string but fails to resolve the symlink or junction.\u003c/li\u003e\n\u003cli\u003eThe application incorrectly determines that the path is within the allowed media directory.\u003c/li\u003e\n\u003cli\u003eThe application performs file system operations (listing, writing, or deleting) based on the attacker-supplied path.\u003c/li\u003e\n\u003cli\u003eThe file system operation is executed outside the intended media root due to the resolved symlink or junction.\u003c/li\u003e\n\u003cli\u003eAttacker gains unauthorized access to sensitive files or directories, potentially leading to data exfiltration, modification, or deletion.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-34603 can lead to unauthorized access to sensitive files and directories on the server hosting Tina CMS. An attacker could list, read, write, or delete files outside the intended media root, potentially leading to data exfiltration, website defacement, or even complete system compromise. The impact is particularly significant if the affected server stores sensitive information or is critical to business operations. The number of potential victims is currently unknown, but any organization using vulnerable versions of Tina CMS is at risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Tina CMS to version 2.2.2 or later to patch CVE-2026-34603.\u003c/li\u003e\n\u003cli\u003eImplement web application firewall (WAF) rules to detect and block suspicious requests containing path traversal sequences targeting media routes.\u003c/li\u003e\n\u003cli\u003eMonitor web server access logs for unusual file access patterns and path traversal attempts. Deploy the provided Sigma rule to detect potential exploitation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-01T17:28:41Z","date_published":"2026-04-01T17:28:41Z","id":"/briefs/2026-04-tina-cms-path-traversal/","summary":"Tina CMS versions before 2.2.2 are vulnerable to a path traversal attack that allows unauthorized file system access due to insufficient validation of symlinks and junction targets in media routes.","title":"Tina CMS Path Traversal Vulnerability (CVE-2026-34603)","url":"https://feed.craftedsignal.io/briefs/2026-04-tina-cms-path-traversal/"}],"language":"en","title":"CraftedSignal Threat Feed — Tina-Cms","version":"https://jsonfeed.org/version/1.1"}