wget2 Improper Certificate Validation_CVE-2026-1858

4.8 / 10

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

Basic Information

ID CVE-2026-1858

Source tenable

Published Apr 29, 2026 at 20:15

Affected Product

Vendor gnu

Product wget2

Affected Versions gnu wget2 0

CWE Classification

CWE-20

References

www.tenable.com /security/research/tra-2026-37

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