CVE-2026-40491

gdown Affected by Arbitrary File Write via Path Traversal in gdown.extractall

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

wkentaro · gdown

CVSS v3.1 NVD

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 GITHUB

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS

0.77% chance of exploitation in the next 30 days, 55th percentile

Published

2026-04-18

Updated

2026-04-20

Proof-of-concept exploits (1)

• advisories/GHSA-76hw-p97h-883f

Security advisories

• wkentaro/gdown/security/advisories/GHSA-76hw-p97h-883f
• wkentaro/gdown/commit/af569fc6ed300b7974dee66dc51e9f01b57b4dff

References

• CVE Record
• NVD entry