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vuln-cve/data/2026/71xxx/CVE-2026-71260.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-71260",
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"state": "PUBLISHED",
"assignerShortName": "TuranSec",
"dateReserved": "2026-08-05T12:23:34.966Z",
"datePublished": "2026-08-05T12:26:08.759Z",
"dateUpdated": "2026-08-10T11:46:22.212Z"
},
"containers": {
"cna": {
"title": "ESPHome web_server Plaintext Password Disclosure via JSON \"value\" Field",
"descriptions": [
{
"lang": "en",
"value": "ESPHome through 2026.7.0-dev discloses plaintext passwords via its web_server component. In WebServer::text_json_ (esphome/components/web_server/web_server.cpp), a text entity configured with mode: password (TEXT_MODE_PASSWORD) has its JSON \"state\" field correctly masked as \"********\", but the same serialization path unconditionally writes the raw password into the JSON \"value\" field via set_json_icon_state_value/set_json_value.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>ESPHome through 2026.7.0-dev discloses plaintext passwords via its web_server component. In WebServer::text_json_ (esphome/components/web_server/web_server.cpp), a text entity configured with mode: password (TEXT_MODE_PASSWORD) has its JSON \"state\" field correctly masked as \"********\", but the same serialization path unconditionally writes the raw password into the JSON \"value\" field via set_json_icon_state_value/set_json_value.</p>"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "CWE-522",
"cweId": "CWE-522",
"type": "CWE"
}
]
}
],
"affected": [
{
"vendor": "esphome",
"product": "esphome",
"programFiles": [
"esphome/components/web_server/web_server.cpp"
],
"versions": [
{
"version": "0",
"lessThanOrEqual": "2026.7.0",
"status": "affected",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"attackVector": "ADJACENT_NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"availabilityImpact": "NONE"
}
}
],
"references": [
{
"url": "https://github.com/esphome/esphome",
"tags": [
"third-party-advisory"
]
},
{
"url": "https://github.com/esphome/esphome/blob/dev/esphome/components/web_server/web_server.cpp",
"tags": [
"third-party-advisory"
]
}
],
"credits": [
{
"lang": "en",
"value": "Alibek Baxtiyorov",
"type": "finder"
}
],
"providerMetadata": {
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec",
"dateUpdated": "2026-08-10T11:46:22.212Z"
},
"source": {
"discovery": "EXTERNAL"
},
"datePublic": "2026-08-05T12:26:08.759Z"
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-05T15:30:39.169767Z",
"id": "CVE-2026-71260",
"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": "2026-08-05T15:31:34.849Z"
}
}
]
}
}