MarkUs is a web application for the submission and grading of student assignments.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Mar 5, 2026 · NIST NVD

   Detected

   MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses/ /assignments/ /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.

2. Jun 17, 2026 · NIST NVD

   Updated

   MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses/ /assignments/ /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.

Affected

• cpe markusproject/markusversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-28405

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-28405

  MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses/ /assignments/ /submissions/html_content route reads the contents of a student-submitted file and renders them without sanitization. Th

  nvd.nist.gov

References

• Patch · github.com
• Release Notes · github.com
• Vendor Advisory · github.com