CVE-2026-85684

CVSS 9.1 (critical) · published 2026-09-04

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.

Weakness: CWE-73

Source: NVD CVE-2026-85684

References

• https://github.com/datalab-to/marker
• https://github.com/datalab-to/marker/blob/v2.0.0/marker/scripts/server.py
• https://github.com/datalab-to/marker/issues/1047
• https://www.vulncheck.com/advisories/marker-through-2.0.0-path-traversal-via-upload-filename
• https://github.com/datalab-to/marker/issues/1047

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