CVE-2026-1858

MEDIUM

4.8

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.

CVE Details

CVSS v3.1 Score4.8

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published4/29/2026

Last Modified5/5/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gnu:wget2

Weaknesses (CWE)

CWE-20

References

https://www.tenable.com/security/research/tra-2026-37(vulnreport@tenable.com)

IOC Correlations

No correlations recorded

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