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CVE-2026-9102— Path Traversal in Altium Enterprise Server ComparisonService Allows Arbitrary File Write

Quick assessment

Affected
Altium Altium Enterprise Server
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.

Altium Enterprise Server是美国Altium公司的一款本地化数据管理服务器。 Altium Enterprise Server存在路径遍历漏洞，该漏洞源于Gerber文件上传API中缺少文件名清理，可能导致经过身份验证的工作区用户通过特制文件名逃逸临时上传目录，在服务器文件系统任意位置写入文件。

AI Predicted 9.8 Difficulty: Moderate EPSS 0.80% · P55

Affected Version Matrix 1

VendorProduct Version RangeStatus
Altium Altium Enterprise Server < 8.0.4 affected
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I. Basic Information for CVE-2026-9102

Vulnerability Information
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Vulnerability Title
Path Traversal in Altium Enterprise Server ComparisonService Allows Arbitrary File Write
Source: CVE Program / CVE List V5
Vulnerability Description
A path traversal vulnerability exists in the Altium Enterprise Server ComparisonService due to missing filename sanitization in the Gerber file upload APIs. A regular authenticated workspace user can supply a crafted filename in the multipart Content-Disposition header to escape the intended temporary upload directory and write arbitrary files to any location on the server filesystem. Because content-controlled files can be written to web-accessible directories, this can be escalated to remote code execution in the context of the service account. It can also be used to overwrite application binaries or configuration files, leading to service takeover or denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Altium Enterprise Server 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Altium Enterprise Server是美国Altium公司的一款本地化数据管理服务器。 Altium Enterprise Server存在路径遍历漏洞，该漏洞源于Gerber文件上传API中缺少文件名清理，可能导致经过身份验证的工作区用户通过特制文件名逃逸临时上传目录，在服务器文件系统任意位置写入文件。
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
Altium Altium Enterprise Server 0 ~ 8.0.4 -

II. Public POCs for CVE-2026-9102

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III. Intelligence Information for CVE-2026-9102

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IV. Related Vulnerabilities

Same product: Altium Enterprise Server
Same vendor: Altium
Same weakness: CWE-22

V. Comments for CVE-2026-9102

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