Refine your search
1 vulnerability found for wget2 by gnu
CVE-2026-1858 (GCVE-0-2026-1858)
Vulnerability from cvelistv5
Published
2026-04-29 20:15
Modified
2026-04-30 15:22
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper input validation
Summary
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.
References
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-1858",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-30T13:16:18.594329Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-30T15:22:05.205Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "wget2",
"vendor": "gnu",
"versions": [
{
"lessThanOrEqual": "2.2.1",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Ireneusz Pastusiak with Tenable"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "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."
}
],
"value": "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."
}
],
"impacts": [
{
"capecId": "CAPEC-21",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-21 Exploitation of Trusted Identifiers"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20 Improper input validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-29T20:15:50.866Z",
"orgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
"shortName": "tenable"
},
"references": [
{
"url": "https://www.tenable.com/security/research/tra-2026-37"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "wget2 Improper Certificate Validation",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
"assignerShortName": "tenable",
"cveId": "CVE-2026-1858",
"datePublished": "2026-04-29T20:15:50.866Z",
"dateReserved": "2026-02-03T20:13:53.718Z",
"dateUpdated": "2026-04-30T15:22:05.205Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}