CVE-2026-1858

Name	CVE-2026-1858
Description	wget2 accepts a server certificate with incorrect Key Usage (KU) or Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
wget2 (PTS)	bookworm, bullseye	1.99.1-2.2	vulnerable
	trixie	2.2.0+ds-1+deb13u1	vulnerable
	forky, sid	2.2.0+ds-3	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
wget2	source	(unstable)	(unfixed)

Fixed by: https://gitlab.com/gnuwget/wget2/-/commit/f4854d7fbc0a85c1d9873f5980707c0b80df212a