wget regression

USN-8543-1 fixed vulnerabilities in Wget. The update for CVE-2026-58472
was incomplete and could introduce a regression. This update fixes the
problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that Wget mishandled semicolons in the userinfo
subcomponent of a URL. A remote attacker could possibly use this issue
to trick a user into connecting to a different host than intended. This
issue only affected Ubuntu 14.04 LTS. (CVE-2024-38428)

It was discovered that Wget incorrectly handled Metalink documents
containing a whitespace-only URL. A remote attacker could possibly use
this issue to cause a denial of service. This issue only affected Ubuntu
18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and
Ubuntu 26.04 LTS. (CVE-2026-58469)

It was discovered that Wget incorrectly handled Content-Range header
values, leading to an integer overflow. A remote attacker could
possibly use this issue to cause download desynchronization.
(CVE-2026-58470)

It was discovered that Wget incorrectly handled character set
conversion of server-supplied filenames. A remote attacker could
possibly use this issue to cause a denial of service or possibly execute
arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04
LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.
(CVE-2026-58471)

It was discovered that Wget incorrectly handled HTML attributes
requiring entity encoding. A remote attacker could possibly use this
issue to cause a denial of service or possibly execute arbitrary code.
(CVE-2026-58472)