CVE-2026-33044

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2020.02,2026.01)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "core", "source": "cna", "vendor": "home-assistant"}, "product": "core", "vendor": "home-assistant"}], "analysis": {"en": {"generated_at": "2026-03-31T15:37:59.470379+00:00", "value": {"mitigation_remediation": ["Upgrade to Home Assistant 2026.01 or newer.", "If immediate upgrade is not feasible, review device names on the Map\u2011card and remove any script tags or malicious content."], "summary": {"action": "Immediate Patch", "impact": "Stored Cross\u2011Site Scripting in Map\u2011card"}, "threat_synthesis": {"affected_systems": "Home Assistant core is affected for all releases from 2020.02 up to, but not including, 2026.01. Versions 2026.01 and later contain the fix and are not vulnerable.", "description_and_impact": "An authenticated user can store a malicious name in a device entity, causing a stored cross\u2011site scripting condition on any dashboard using a Map\u2011card that displays that entity. The script runs when a viewer hovers over the information point, potentially executing arbitrary code in the victim\u2019s browser and exposing confidential information or hijacking the session. This is a classic stored XSS flaw classified as CWE\u201179.", "risk_and_exploitability": "The CVSS score of 7.3 indicates high severity. The EPSS score of less than 1% implies a low probability of widespread exploitation. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires the attacker to have credentials to create or modify a device name and a victim who views a Map\u2011card with that device, indicating that the attack vector is authenticated followed by victim interaction (\u201chovers over an information point\u201d)."}}}}, "created": "2026-03-29T20:30:27.179150+00:00", "updated": "2026-03-31T20:00:48.421471+00:00", "vendors": ["home-assistant", "home-assistant$PRODUCT$core"]}