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CVE-2026-85618— ConvertX 0.17.0 Arbitrary File Read via LaTeX Input Directives

Quick assessment

Affected
C4illin ConvertX
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.

C4illin Convertx是C4illin个人开发者的一个文件转换工具 C4illin Convertx 0.17.0版本存在路径遍历漏洞，该漏洞源于xelatex转换器未对LaTeX文件中的input和verbatiminput指令进行充分限制，经过身份验证的用户可通过上传特制的.tex文件读取服务器进程可访问的任意文件。

CVSS 6.5 · Medium EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
C4illin ConvertX ≤ 0.18.0 affected
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I. Basic Information for CVE-2026-85618

Vulnerability Information
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Vulnerability Title
ConvertX 0.17.0 Arbitrary File Read via LaTeX Input Directives
Source: CVE Program / CVE List V5
Vulnerability Description
ConvertX 0.17.0 contains an arbitrary file read vulnerability in the xelatex converter that allows authenticated users to read files by uploading LaTeX files with input directives. Attackers can upload .tex files containing \\input{path} or \\verbatiminput{path} directives to have the TeX engine read arbitrary files accessible to the server process and include them in downloadable PDF output.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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
C4illin Convertx 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
C4illin Convertx是C4illin个人开发者的一个文件转换工具 C4illin Convertx 0.17.0版本存在路径遍历漏洞，该漏洞源于xelatex转换器未对LaTeX文件中的input和verbatiminput指令进行充分限制，经过身份验证的用户可通过上传特制的.tex文件读取服务器进程可访问的任意文件。
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
C4illin ConvertX 0 ~ 0.18.0 -

II. Public POCs for CVE-2026-85618

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III. Intelligence Information for CVE-2026-85618

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Vendor Advisories for CVE-2026-85618 (1)

Proof of Concept for CVE-2026-85618 (2)

Other References for CVE-2026-85618 (1)

IV. Related Vulnerabilities

Same product: ConvertX
Same vendor: C4illin
Same weakness: CWE-22

V. Comments for CVE-2026-85618

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