CVE-2026-1858
published 2026-04-29CVE-2026-1858: wget2 accepts a server certificate with incorrect Key Usage (KU) or Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated…
PriorityP423medium4.8CVSS 3.1
AVNACHPRNUINSUCLILAN
EPSS
0.15%
5.1th percentile
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
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| gnu | wget2 | <= 2.2.1 | — |
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No public exploits indexed.
Bugzilla
CVE-2026-1858 wget2: wget2: Improper certificate validation allows server impersonation [fedora-all]
bugzilla·2026-04-30·CVSS 4.8
CVE-2026-1858 [MEDIUM] CVE-2026-1858 wget2: wget2: Improper certificate validation allows server impersonation [fedora-all]
CVE-2026-1858 wget2: wget2: Improper certificate validation allows server impersonation [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-1858 wget2: wget2: Improper certificate validation allows server impersonation [epel-all]
bugzilla·2026-04-30·CVSS 4.8
CVE-2026-1858 [MEDIUM] CVE-2026-1858 wget2: wget2: Improper certificate validation allows server impersonation [epel-all]
CVE-2026-1858 wget2: wget2: Improper certificate validation allows server impersonation [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-1858 wget2: wget2: Improper certificate validation allows server impersonation
bugzilla·2026-04-29·CVSS 4.8
CVE-2026-1858 [MEDIUM] CVE-2026-1858 wget2: wget2: Improper certificate validation allows server impersonation
CVE-2026-1858 wget2: wget2: Improper certificate validation allows server impersonation
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.
2026-04-29
Published