CVE-2026-1858

wget2 Improper Certificate Validation

Published Apr 29, 2026 CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:gnu:wget2:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
tenable
Published
Updated
Apr 30, 2026, 3:22 PM
Reserved
Feb 3, 2026, 8:13 PM
Status
Analyzed
Published
Apr 29, 2026, 9:16 PM
Modified
Oct 26, 2026, 8:10 PM