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.

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History

Wed, 29 Apr 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Gnu
Gnu wget2
Vendors & Products Gnu
Gnu wget2

Wed, 29 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
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.
Title wget2 Improper Certificate Validation
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: tenable

Published:

Updated: 2026-04-30T15:22:05.205Z

Reserved: 2026-02-03T20:13:53.718Z

Link: CVE-2026-1858

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-29T21:16:20.513

Modified: 2026-04-30T15:13:14.230

Link: CVE-2026-1858

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-30T03:45:06Z

Weaknesses