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vuln-cve/data/2026/42xxx/CVE-2026-42008.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-42008",
"assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
"state": "PUBLISHED",
"assignerShortName": "OX",
"dateReserved": "2026-04-23T11:15:21.199Z",
"datePublished": "2026-08-28T10:12:26.018Z",
"dateUpdated": "2026-08-28T15:54:17.203Z"
},
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"modules": [
"core"
],
"product": "OX Dovecot Pro",
"vendor": "Open-Xchange GmbH",
"versions": [
{
"lessThan": "2.3.22.2",
"status": "affected",
"version": "2.3.4",
"versionType": "semver"
},
{
"lessThan": "3.0.7",
"status": "affected",
"version": "3.0.0",
"versionType": "semver"
},
{
"lessThan": "3.1.6",
"status": "affected",
"version": "3.1.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"modules": [
"core"
],
"product": "OX Dovecot CE",
"vendor": "Open-Xchange GmbH",
"versions": [
{
"lessThan": "2.4.5",
"status": "affected",
"version": "2.3.4",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Forwarding information received from a host listed as a trusted proxy is not kept separate from Dovecot's own authentication fields, so a value sent by that host can be injected as an internal authentication field. Any host permitted to act as a trusted proxy can authenticate as any user without knowing that user's password. This affects deployments whose password database honours a field that permits authentication without a password. Deployments that do not configure trusted proxies are not affected. Restrict the list of trusted proxy networks to hosts that are fully under your control. Update to non-vulnerable version. No publicly available exploits are known."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "Improper Authentication",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
"shortName": "OX",
"dateUpdated": "2026-08-28T10:30:53.801Z"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json"
}
],
"source": {
"defect": "DOV-9109",
"discovery": "INTERNAL"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-28T14:32:34.905857Z",
"id": "CVE-2026-42008",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-08-28T15:54:17.203Z"
}
}
]
}
}