VULNERABILITY INTELLIGENCE

CVE-2026-1858

CVSS score4.8 MEDIUM
EPSS probability0.15%
CISA KEVNot currently listed
Published2026-04-29
Last modified2026-10-26
CVSS vectorCVSS: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.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references