CVE-2026-27807

Summary

MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.4, MarkUs allows course instructors to upload YAML files to create/update various entities (e.g., assignment settings). These YAML files are parsed with aliases enabled. This issue has been patched in version 2.9.4.

Affected Software

VendorProductVersion RangeStatus
MarkUsProjectMarkus< 2.9.4affected

Weaknesses

  • CWE-776: CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References