Integer overflow in GNU Wget

CVE-2026-58470

GNU Wget through 1.25.0, fixed in commit 43d3ba9, contains an integer overflow vulnerability in the parse_content_range() function within src/http.c that allows server-controlled values to cause signed integer arithmetic to overflow. Attackers can supply malicious Content-Range header values to trigger undefined behavior and download desynchronization in the affected client.

Vulnerability class: Integer Overflow

EPSS: 0.002 (16.3th percentile) — read the EPSS interpretation.