{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/products/school-app/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":8.1,"id":"CVE-2026-7491"}],"_cs_exploited":false,"_cs_products":["School App"],"_cs_severities":["high"],"_cs_tags":["idor","vulnerability","web application","cve-2026-7491"],"_cs_type":"advisory","_cs_vendors":["Zyosoft"],"content_html":"\u003cp\u003eThe Zyosoft School App is susceptible to an Insecure Direct Object Reference (IDOR) vulnerability identified as CVE-2026-7491. This flaw allows authenticated remote attackers to bypass authorization controls by modifying specific parameters within the application\u0026rsquo;s requests. By manipulating these parameters, attackers can gain unauthorized access to sensitive data belonging to other users, as well as modify that data. Successful exploitation allows unauthorized data access and modification, potentially leading to data breaches, privacy violations, and manipulation of user accounts. Defenders should prioritize identifying and mitigating this vulnerability to prevent potential abuse.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker authenticates to the Zyosoft School App using valid credentials.\u003c/li\u003e\n\u003cli\u003eThe attacker identifies a request that includes a user-controlled parameter referencing a specific object (e.g., user ID, record number).\u003c/li\u003e\n\u003cli\u003eThe attacker modifies the value of this parameter to reference a different object belonging to another user.\u003c/li\u003e\n\u003cli\u003eThe attacker sends the modified request to the server.\u003c/li\u003e\n\u003cli\u003eThe server, lacking proper authorization checks, processes the request using the attacker-supplied object reference.\u003c/li\u003e\n\u003cli\u003eThe server returns the data associated with the targeted user\u0026rsquo;s object to the attacker.\u003c/li\u003e\n\u003cli\u003eThe attacker can further modify parameters to alter the data of the targeted user.\u003c/li\u003e\n\u003cli\u003eThe attacker successfully reads or modifies the targeted user\u0026rsquo;s data without proper authorization.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-7491 allows authenticated attackers to read and modify other users\u0026rsquo; data within the Zyosoft School App. This can lead to severe consequences, including unauthorized access to sensitive student or staff information, modification of grades or attendance records, and potential data breaches. The number of affected users depends on the app\u0026rsquo;s deployment size, but any instance is vulnerable. This issue could affect any educational institution using the Zyosoft School App.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect web server logs for requests containing unusual parameter modifications, specifically those referencing user IDs or other sensitive data fields (webserver logs).\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule provided below to detect attempts to access or modify resources using potentially manipulated object references (Sigma rule).\u003c/li\u003e\n\u003cli\u003eImplement robust authorization checks in the Zyosoft School App to verify that users only have access to resources they are explicitly authorized to access.\u003c/li\u003e\n\u003cli\u003eContact Zyosoft for a patch addressing CVE-2026-7491.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-02T10:16:19Z","date_published":"2026-05-02T10:16:19Z","id":"/briefs/2026-05-zyosoft-school-app-idor/","summary":"Zyosoft's School App contains an Insecure Direct Object Reference vulnerability (CVE-2026-7491) that allows authenticated remote attackers to modify parameters and access or modify other users' data.","title":"Zyosoft School App Insecure Direct Object Reference Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-zyosoft-school-app-idor/"}],"language":"en","title":"CraftedSignal Threat Feed — School App","version":"https://jsonfeed.org/version/1.1"}