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NVD Vulnerability Details :

CVE-2026-1858

Analyzed

Source-vulnreport@tenable.com

Published At-29 Apr, 2026 | 21:16

Updated At-05 May, 2026 | 02:47

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	4.8	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Type: Secondary

Version: 3.1

Base score: 4.8

Base severity: MEDIUM

Vector:

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

CPE Matches

GNU

>>wget2>>Versions up to 2.2.1(inclusive)

cpe:2.3:a:gnu:wget2:*:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-20	Secondary	vulnreport@tenable.com

CWE ID: CWE-20

Type: Secondary

Source: vulnreport@tenable.com

References

Hyperlink	Source	Resource
https://www.tenable.com/security/research/tra-2026-37	vulnreport@tenable.com	Exploit Third Party Advisory

Hyperlink: https://www.tenable.com/security/research/tra-2026-37

Source: vulnreport@tenable.com

Resource:

Exploit

Third Party Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History