PT-2026-56241 · Gnuwget · Wget

Tristan Madani · Published 2026-07-07 · Updated 2026-07-07 · CVE-2026-58472

Mitre

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H

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.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-58472

Affected Products

Wget

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-58472 · Security Note
• https://gitlab.com/gnuwget/wget/-/commit/dd692d9cea5335b181d877ae917fe6e75587a812 · Patch
• https://vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-html-attribute-encoding · Note