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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.

Datalab是Datalab组织的一款大数据处理分析软件。 Datalab 2.0.0及之前版本存在输入验证错误漏洞，该漏洞源于FastAPI /marker/upload处理程序未能清理file.filename参数，存在路径遍历问题，未经身份验证的攻击者可利用包含目录遍历序列的文件名写入任意文件或删除系统中的现有文件。

CVSS 9.1 · Critical EPSS 1.10% · P66

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
Vulnerability Title
Datalab 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Datalab是Datalab组织的一款大数据处理分析软件。 Datalab 2.0.0及之前版本存在输入验证错误漏洞，该漏洞源于FastAPI /marker/upload处理程序未能清理file.filename参数，存在路径遍历问题，未经身份验证的攻击者可利用包含目录遍历序列的文件名写入任意文件或删除系统中的现有文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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