CVE-2026-58472: GNU Wget

High severity, CVSS 7.1. EPSS: 0.4% chance of exploitation in the next 30 days.

GNU Wget through 1.25.0, fixed in commit dd692d9, contains a heap buffer overflow vulnerability in the html_quote_string() function in src/convert.c that allows a remote attacker to trigger memory corruption by supplying a crafted HTML attribute with a large number of characters requiring entity encoding. A server-supplied HTML attribute causes a signed integer counter to overflow during output size accumulation, resulting in an undersized heap allocation and subsequent heap buffer overflow during the copy phase.

Affected products

• GNU Wget: up to and including 1.25.0

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