{"id":"CVE-2026-28405","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-28405","generatedAt":"2026-10-28T05:58:57.858Z","title":"MarkUs is a web application for the submission and grading of student assignments.","description":"MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content route reads the contents of a student-submitted file and renders them without sanitization. This issue has been patched in version 2.9.1.","published":"2026-03-05T21:16:22.000Z","lastModified":"2026-06-17T10:28:34.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":["markusproject/markus"],"epss":{"score":0.00232,"percentile":0.14012,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/MarkUsProject/Markus/commit/55d74f2ddb72d2ec2f29aa2b4cb6b2da10755036","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/MarkUsProject/Markus/security/advisories/GHSA-p5pc-pxrj-3893","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-28405","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}