CVE-2026-1858

EUVD-2026-26285
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.8 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 5%
Affected Products (NVD)
VendorProductVersion
gnuwget2
𝑥
≤ 2.2.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
wget2
bookworm
no-dsa
bullseye
postponed
forky
vulnerable
sid
vulnerable
trixie
no-dsa
Common Weakness Enumeration
References
https://www.tenable.com/security/research/tra-2026-37