CVE-2026-85684: Datalab-To Marker

Critical severity, CVSS 9.1. EPSS: 1.1% chance of exploitation in the next 30 days.

marker through 2.0.0 contains a path traversal vulnerability in the FastAPI /marker/upload handler that fails to sanitize the file.filename parameter. Unauthenticated attackers can supply filenames containing directory traversal sequences to write arbitrary files to any location or delete existing files on the system.

Affected products

• Datalab-To Marker: up to and including 2.0.0

Published 2026-09-04. Last modified 2026-09-23.