{"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": "2026-08-05T12:26:08.759Z"}, "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(). Because web_server listens on port 80 with no authentication by default, any attacker on the local network can retrieve the plaintext password (e.g. WiFi credentials, API tokens) via GET /text/<entity_id> or the /events EventSource stream."}], "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"}}], "references": [{"url": "https://github.com/esphome/esphome"}, {"url": "https://github.com/esphome/esphome/blob/dev/esphome/components/web_server/web_server.cpp"}], "credits": [{"lang": "en", "value": "Alibek Baxtiyorov", "type": "finder"}], "providerMetadata": {"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "shortName": "TuranSec", "dateUpdated": "2026-08-05T12:26:08.759Z"}}}}

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