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CVE-2026-1858

wget2 Improper Certificate Validation

MEDIUM
4.8
CVSS Score
Published: April 29, 2026 at 08:15 PM UTC
Updated: June 17, 2026 at 10:16 AM UTC
1 product affected across 1 vendorWget2

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Wget2· Gnu
95%
v ≤ 2.2.1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitThird Party Advisory
Source: cverecord
https://www.tenable.com/security/research/tra-2026-37

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMtenable
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20

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