CVE-2026-27807 - MarkUs: YAML alias (‘billion laughs’) DoS in config upload

CVE ID : CVE-2026-27807 Published : March 6, 2026, 2:48 a.m. | 1 hour, 1 minute ago Description : 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. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...