{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-5642/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-5642"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Student-Management-System"],"_cs_severities":["high"],"_cs_tags":["CVE-2026-5642","privilege-escalation","web-application"],"_cs_type":"advisory","_cs_vendors":["Cyber-III"],"content_html":"\u003cp\u003eA critical vulnerability, CVE-2026-5642, has been identified in the Cyber-III Student-Management-System up to version 1a938fa61e9f735078e9b291d2e6215b4942af3f. The vulnerability resides within the HTTP POST Request Handler, specifically affecting an unknown function of the \u003ccode\u003e/viva/update.php\u003c/code\u003e file. Attackers can remotely exploit this flaw by manipulating the \u003ccode\u003eName\u003c/code\u003e argument in a POST request. This improper authorization can lead to unauthorized access or privilege escalation. The exploit is publicly known, increasing the risk of widespread exploitation. The vendor employs a rolling release model, hindering identification of specific affected or patched versions. The vendor has not responded to vulnerability reports.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a vulnerable Cyber-III Student-Management-System instance exposed to the internet.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious HTTP POST request targeting the \u003ccode\u003e/viva/update.php\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe crafted request includes a modified \u003ccode\u003eName\u003c/code\u003e parameter designed to bypass authorization checks.\u003c/li\u003e\n\u003cli\u003eThe server-side application fails to properly validate the \u003ccode\u003eName\u003c/code\u003e parameter, leading to improper authorization.\u003c/li\u003e\n\u003cli\u003eAttacker gains unauthorized access to sensitive functions within the application.\u003c/li\u003e\n\u003cli\u003eThe attacker escalates privileges, potentially gaining administrative control over the system.\u003c/li\u003e\n\u003cli\u003eAttacker modifies student records, alters grades, or performs other malicious actions.\u003c/li\u003e\n\u003cli\u003eAttacker maintains persistence by creating a new administrative account or modifying existing ones.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-5642 allows attackers to escalate privileges within the Cyber-III Student-Management-System, potentially affecting all student and faculty data. This can lead to unauthorized access, data breaches, modification of records, and disruption of educational services. Given the public availability of the exploit, numerous educational institutions and organizations using the vulnerable system are at risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect web server logs for POST requests to \u003ccode\u003e/viva/update.php\u003c/code\u003e containing suspicious \u003ccode\u003eName\u003c/code\u003e parameter values to detect exploitation attempts using the \u0026quot;Cyber-III Update PHP Post Request\u0026quot; Sigma rule.\u003c/li\u003e\n\u003cli\u003eImplement input validation and sanitization on the \u003ccode\u003eName\u003c/code\u003e parameter within the \u003ccode\u003e/viva/update.php\u003c/code\u003e file to prevent improper authorization.\u003c/li\u003e\n\u003cli\u003eDeploy the \u0026quot;Cyber-III Suspicious Update PHP Access\u0026quot; Sigma rule to detect unusual access patterns to the \u003ccode\u003e/viva/update.php\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for abnormal HTTP status codes (e.g., 302, 403, 500) in response to POST requests targeting \u003ccode\u003e/viva/update.php\u003c/code\u003e, as these may indicate exploitation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-21T12:00:00Z","date_published":"2024-01-21T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-cyber-iii-privilege-escalation/","summary":"CVE-2026-5642 allows a remote attacker to escalate privileges on a Cyber-III Student-Management-System by manipulating the Name argument in an HTTP POST request to /viva/update.php due to improper authorization.","title":"Cyber-III Student-Management-System Improper Authorization Vulnerability (CVE-2026-5642)","url":"https://feed.craftedsignal.io/briefs/2024-01-cyber-iii-privilege-escalation/"}],"language":"en","title":"CraftedSignal Threat Feed - CVE-2026-5642","version":"https://jsonfeed.org/version/1.1"}