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I. Basic Information for CVE-2026-1858
Vulnerability Information
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Vulnerability Title
wget2 Improper Certificate Validation
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
gnuwget2 0 ~ 2.2.1 -
II. Public POCs for CVE-2026-1858
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III. Intelligence Information for CVE-2026-1858
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IV. Related Vulnerabilities
Same vendor: gnu
Same weakness: CWE-20
V. Comments for CVE-2026-1858

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