CVE-2026-1858 | THREATINT

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.

PUBLISHED Reserved 2026-02-03 | Published 2026-04-29 | Updated 2026-04-30 | Assigner tenable

MEDIUM: 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-20 Improper input validation

Product status

Default status

unaffected

Any version

affected

Credits

Ireneusz Pastusiak with Tenable finder

References

www.tenable.com/security/research/tra-2026-37

cve.org (CVE-2026-1858)

nvd.nist.gov (CVE-2026-1858)

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