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CVE-2026-85684— marker through 2.0.0 Path Traversal via upload filename

Quick assessment

Affected
datalab-to marker
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

marker 2.0.0 及更早版本中存在路径遍历漏洞。该漏洞位于 FastAPI 的 处理器，由于未对 参数进行有效净化（sanitize）。未经身份验证的攻击者可以提交包含目录遍历序列的文件名，从而在系统的任意位置写入任意文件，或删除系统中已有的文件。

CVSS 9.1 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
datalab-to marker ≤ 2.0.0 affected
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I. Basic Information for CVE-2026-85684

Vulnerability Information
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Vulnerability Title
marker through 2.0.0 Path Traversal via upload filename
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
文件名或路径的外部可控制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
datalab-to marker 0 ~ 2.0.0 -

II. Public POCs for CVE-2026-85684

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III. Intelligence Information for CVE-2026-85684

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Vendor Advisories for CVE-2026-85684 (1)

Proof of Concept for CVE-2026-85684 (1)

Other References for CVE-2026-85684 (1)

IV. Related Vulnerabilities

Same vendor: datalab-to
Same weakness: CWE-73

V. Comments for CVE-2026-85684

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