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CVE-2026-40491— gdown Affected by Arbitrary File Write via Path Traversal in gdown.extractall

Quick assessment

Affected
wkentaro gdown
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.

gdown是Kentaro Wada个人开发者的一个谷歌网盘文件下载工具。 gdown 5.2.2之前版本存在安全漏洞，该漏洞源于extractall功能存在路径遍历，可能导致任意文件覆盖和远程代码执行。

CVSS 6.5 · Medium EPSS 0.57% · P45
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I. Basic Information for CVE-2026-40491

Vulnerability Information
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Vulnerability Title
gdown Affected by Arbitrary File Write via Path Traversal in gdown.extractall
Source: CVE Program / CVE List V5
Vulnerability Description
gdown is a Google Drive public file/folder downloader. Versions prior to 5.2.2 are vulnerable to a Path Traversal attack within the extractall functionality. When extracting a maliciously crafted ZIP or TAR archive, the library fails to sanitize or validate the filenames of the archive members. This allow files to be written outside the intended destination directory, potentially leading to arbitrary file overwrite and Remote Code Execution (RCE). Version 5.2.2 contains a fix.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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
gdown 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
gdown是Kentaro Wada个人开发者的一个谷歌网盘文件下载工具。 gdown 5.2.2之前版本存在安全漏洞，该漏洞源于extractall功能存在路径遍历，可能导致任意文件覆盖和远程代码执行。
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
wkentaro gdown < 5.2.2 -

II. Public POCs for CVE-2026-40491

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III. Intelligence Information for CVE-2026-40491

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Patches & Fixes for CVE-2026-40491 (1)

Vendor Advisories for CVE-2026-40491 (1)

IV. Related Vulnerabilities

Same weakness: CWE-22

V. Comments for CVE-2026-40491

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