CVE-2026-1858
wget2 Improper Certificate Validation
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 |
| Vendor | gnu |
| Product | wget2 |
| Published | Apr 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
gnu / wget2
0 ≤ 2.2.1
References
Credits
Ireneusz Pastusiak with Tenable