PT-2026-33220 · Pypi · Gdown

Redyank · Published 2026-04-14 · Updated 2026-05-01 · CVE-2026-40491

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions gdown versions prior to 5.2.2

Description A Path Traversal issue exists within the extractall() function in the gdown/extractall.py file. The software fails to sanitize or validate the filenames of members within ZIP or TAR archives during extraction. This allows files to be written outside the intended destination directory, which can lead to arbitrary file overwrite and Remote Code Execution (RCE).

Recommendations Update to version 5.2.2. As a temporary workaround, restrict the use of the extractall() function when processing archives from untrusted sources.

Fix

RCE

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-40491

GHSA-76HW-P97H-883F

Affected Products

Gdown

References · 14

• https://github.com/wkentaro/gdown/commit/af569fc6ed300b7974dee66dc51e9f01b57b4dff · Patch
• https://github.com/wkentaro/gdown/security/advisories/GHSA-76hw-p97h-883f · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-40491 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-40491 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-76hw-p97h-883f · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40491 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-40491 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-40491 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-40491 · Vendor Advisory
• https://github.com/wkentaro/gdown/releases/tag/v5.2.2 · Note
• https://github.com/wkentaro/gdown · Note
• https://t.me/cveNotify/161794 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2045401397483499881 · Twitter Post
• https://twitter.com/CVEnew/status/2045467329014665482 · Twitter Post