VU#564823: GNU Wget enables SSRF via unvalidated FTP PASV IPs

Summary

Overview GNU Wget, versions 1.25.0 and earlier, contains a server-side request forgery (SSRF) vulnerability in its implementation of FTP passive mode. Because Wget does not properly validate IP addresses obtained from PASV responses, an attacker-controlled FTP endpoint can redirect the client’s connection to arbitrary IPs, potentially exposing internal network host and service responses. This vulnerability has been remediated in a recent update by GNU; see the Solutions section below for resolution guidance. Description GNU Wget is a widely used command-line utility for retrieving content over HTTP, HTTPS, and FTP. When operating over FTP in passive mode, Wget relies on the server’s PASV response to determine which IP address and port to use for the data connection. CVE-2026-15146 GNU Wget does not validate the IP address provided by an... Related CVEs: CVE-2021-40491, CVE-2026-15146.

Why it matters

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Operator check

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