Ubuntu Security Notices USN-8572-1 USN-8572-1: Wget vulnerability Publication date 20 July 2026 Overview Wget could be made to connect to unintended network resources. Releases 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS 14.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages wget - retrieves files from the web Details It was discovered that Wget did not properly validate the IP address provided in an FTP PASV response when operating in FTP passive mode. A remote attacker controlling a malicious FTP server, or an HTTP server that redirects to an FTP URL, could possibly use this issue to redirect Wget's data connection to an arbitrary address and perform server-side request forgery, potentially accessing localhost services or internal network resources. It was discovered that Wget did not properly validate the IP address provided in an FTP PASV response when operating in FTP passive mode. A remote attacker controlling a malicious FTP server, or an HTTP server that redirects to an FTP URL, could possibly use this issue to redirect Wget's data connection to an arbitrary address and perform server-side request forgery, potentially accessing localhost services or internal network resources. Update instructions In general, a standard system update will make all the necessary changes. Learn more about how to get the fixes. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 26.04 LTS resolute wget – 1.25.0-2ubuntu4.3 24.04 LTS noble wget – 1.21.4-1ubuntu4.4 22.04 LTS jammy wget – 1.21.2-2ubuntu1.4 20.04 LTS focal wget – 1.20.3-1ubuntu2.1+esm3 Ubuntu Pro Fix available with Ubuntu Pro . 18.04 LTS bionic wget – 1.19.4-1ubuntu2.2+esm4 Ubuntu Pro Fix available with Ubuntu Pro . 16.04 LTS xenial wget – 1.17.1-1ubuntu1.5+esm4 Ubuntu Pro Fix available with Ubuntu Pro via Legacy Support add-on. 14.04 LTS trusty wget – 1.15-1ubuntu1.14.04.5+esm3 Ubuntu Pro Fix available with Ubuntu Pro via Legacy Support add-on. Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2026-15146 CVE-2026-15146