What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-18 · updated 2026-10-26
• Weakness: CWE-22

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.

Affected products

• wkentaro gdown: before 5.2.2 — fixed in 5.2.2

How to fix

Upgrade to a fixed version: wkentaro gdown 5.2.2. Check the vendor advisory for mitigations.

References

• https://github.com/wkentaro/gdown/commit/af569fc6ed300b7974dee66dc51e9f01b57b4dff
• https://github.com/wkentaro/gdown/releases/tag/v5.2.2
• https://github.com/wkentaro/gdown/security/advisories/GHSA-76hw-p97h-883f

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