CVE-2026-58469: GNU Wget

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

GNU Wget through 1.25.0, fixed in commit 37a40fc, contains a heap buffer underread vulnerability in the clean_metalink_string() function within src/metalink.c that allows a malicious server to trigger memory corruption by serving a Metalink document containing a whitespace-only URL. Attackers can cause the function to decrement a pointer past the start of the buffer when processing an all-whitespace Metalink URL, potentially leading to abnormal program behavior.

Affected products

• GNU Wget: up to and including 1.25.0

Published 2026-07-07. Last modified 2026-07-09.