Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-07-07T19:45:53 wget: GNU Wget: Integer overflow in Content-Range header parsing causes download desynchronization 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CWE-190

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.

An integer overflow in GNU Wget's parse_content_range() function allows malicious servers to send crafted Content-Range headers. This triggers undefined behavior and download desynchronization, potentially causing a denial of service or data integrity issues for the client.

Moderate: GNU Wget is vulnerable to a client-side integer overflow in its Content-Range header processing. If a client connects to an attacker-controlled server, the server can return anomalous headers that cause undefined behavior and stream desynchronization. This results in local data integrity issues or a denial of service, though the impact is strictly limited to the Wget process itself. To mitigate this issue, users should avoid using `wget` to download content from untrusted or unverified sources. When `wget` is used in automated scripts or environments, ensure that the target servers are trusted to prevent exposure to malicious `Content-Range` headers. Restricting network access for `wget` to only trusted hosts can also reduce the attack surface. Red Hat Enterprise Linux 10 Fix deferred wget Red Hat Enterprise Linux 6 Out of support scope wget Red Hat Enterprise Linux 7 Out of support scope wget Red Hat Enterprise Linux 8 Fix deferred wget Red Hat Enterprise Linux 9 Fix deferred wget https://www.cve.org/CVERecord?id=CVE-2026-58470 https://nvd.nist.gov/vuln/detail/CVE-2026-58470 https://gitlab.com/gnuwget/wget/-/commit/43d3ba9336bc94937e6fae2365c6ffd30c34ffcf https://www.vulncheck.com/advisories/gnu-wget-integer-overflow-via-content-range-header-parsing