{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-5258/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-5258"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["path traversal","cve-2026-5258","web application"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eSanster IOPaint version 1.5.3 is vulnerable to a path traversal flaw (CVE-2026-5258) within its File Manager component. The vulnerability resides in the \u003ccode\u003e_get_file\u003c/code\u003e function located in \u003ccode\u003eiopaint/file_manager/file_manager.py\u003c/code\u003e. By crafting a malicious request and manipulating the \u003ccode\u003efilename\u003c/code\u003e argument, an unauthenticated attacker can bypass directory restrictions and potentially read sensitive files on the server. Publicly available exploits exist, increasing the urgency for patching or mitigating this vulnerability. The vendor was notified but did not respond.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker identifies a Sanster IOPaint 1.5.3 instance running a vulnerable server.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request targeting the file retrieval endpoint of the \u003ccode\u003eFile Manager\u003c/code\u003e component.\u003c/li\u003e\n\u003cli\u003eWithin the request, the attacker manipulates the \u003ccode\u003efilename\u003c/code\u003e parameter to include path traversal sequences (e.g., \u003ccode\u003e../\u003c/code\u003e, \u003ccode\u003e..%2f\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003eThe server-side application, specifically the \u003ccode\u003e_get_file\u003c/code\u003e function in \u003ccode\u003eiopaint/file_manager/file_manager.py\u003c/code\u003e, receives the request with the tainted \u003ccode\u003efilename\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eDue to insufficient input validation and sanitization, the application incorrectly constructs the file path.\u003c/li\u003e\n\u003cli\u003eThe application attempts to read a file from a location outside the intended directory, based on the attacker-controlled path.\u003c/li\u003e\n\u003cli\u003eIf successful, the application returns the contents of the arbitrary file in the HTTP response.\u003c/li\u003e\n\u003cli\u003eThe attacker receives the content of the targeted file, potentially containing sensitive information or configuration data.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this path traversal vulnerability (CVE-2026-5258) allows an attacker to read arbitrary files on the server hosting Sanster IOPaint. This can lead to the disclosure of sensitive information, such as application source code, configuration files containing database credentials, or user data. The impact depends on the permissions of the user account running the application. If the application runs with elevated privileges, the attacker may be able to access system-level files, potentially leading to further compromise of the server.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetect IOPaint Path Traversal Attempt\u003c/code\u003e to detect exploitation attempts based on suspicious URL encoding in web server logs.\u003c/li\u003e\n\u003cli\u003eImplement strict input validation and sanitization on the \u003ccode\u003efilename\u003c/code\u003e parameter within the \u003ccode\u003e_get_file\u003c/code\u003e function to prevent path traversal attacks as described in CVE-2026-5258.\u003c/li\u003e\n\u003cli\u003eConsider using a web application firewall (WAF) with rules designed to block path traversal attempts.\u003c/li\u003e\n\u003cli\u003eUpgrade to a patched version of Sanster IOPaint as soon as one becomes available to remediate CVE-2026-5258.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-01T07:16:02Z","date_published":"2026-04-01T07:16:02Z","id":"/briefs/2026-04-iopaint-path-traversal/","summary":"A path traversal vulnerability (CVE-2026-5258) exists in Sanster IOPaint 1.5.3, allowing remote attackers to read arbitrary files by manipulating the filename argument in the _get_file function within the File Manager component.","title":"Sanster IOPaint Path Traversal Vulnerability (CVE-2026-5258)","url":"https://feed.craftedsignal.io/briefs/2026-04-iopaint-path-traversal/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-5258","version":"https://jsonfeed.org/version/1.1"}