| 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) |
| Debian Bugs | 1135342 |
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) | | | 1135342 |
Notes
[trixie] - wget2 <no-dsa> (Minor issue)
[bookworm] - wget2 <no-dsa> (Minor issue)
[bullseye] - wget2 <postponed> (Minor issue; can be fixed in next update)
Fixed by: https://gitlab.com/gnuwget/wget2/-/commit/f4854d7fbc0a85c1d9873f5980707c0b80df212a