{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-33045", "tracking": { "current_release_date": "2026-03-31T19:42:42.186616Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33045", "initial_release_date": "2026-03-27T21:15:26.695159Z", "revision_history": [ { "date": "2026-03-27T21:15:26.695159Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-27T21:15:29.726007Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-27T21:27:13.813601Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (2).| CWES updated (1)." }, { "date": "2026-03-27T21:27:15.240793Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-27T21:35:07.218873Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-27T21:35:19.286804Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-28T07:40:42.073956Z", "number": "7", "summary": "References created (1)." }, { "date": "2026-03-28T07:43:20.428765Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-29T00:40:32.265891Z", "number": "9", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-29T00:40:33.748079Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-31T14:25:21.522923Z", "number": "11", "summary": "CVSS created.| Products created (1).| Product Identifiers created (1).| Exploits created (2)." }, { "date": "2026-03-31T14:25:25.358094Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-03-31T19:39:04.011882Z", "number": "13", "summary": "Unknown change." } ], "status": "interim", "version": "13" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=2025.2.0|<2026.1.0", "product": { "name": "vers:unknown/>=2025.2.0|<2026.1.0", "product_id": "CSAFPID-5968858", "product_identification_helper": { "cpe": "cpe:2.3:a:home-assistant:home-assistant:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Home Assistant" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=2025.02|<2026.01", "product": { "name": "vers:unknown/>=2025.02|<2026.01", "product_id": "CSAFPID-5956160" } } ], "category": "product_name", "name": "core" } ], "category": "vendor", "name": "Home Assistant" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33045", "cwe": { "id": "CWE-79", "name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')" }, "notes": [ { "category": "description", "text": "### Summary\nThe \"remaining charge time\"-sensor for mobile phones (imported/included from Android Auto it appears) is vulnerable to the same issue as CVE-2025-62172.\n\"image\"\nThis also indicates that any sensor showing their name in the history-graph, is likely to be vulnerable to this issue.\n\n### Details\n\nAnother entity was found which displays the same behavior as in this issue: [CVE-2025-62172](https://github.com/home-assistant/core/security/advisories/GHSA-mq77-rv97-285m)\n\n\nThe History-graph card will sometimes display the name of the entity it is displaying, when the graph is shown as a line with values on the x and y axis. This appears to be vulnerable to Cross-Site scripting (_XSS_) as it does not have any output escaping or sanitization.\n\nThe PoC in this instance only shows HTML-injection in the form of the `` -tag being rendered as strike through, but the vulnerability also allows for injecting arbitrary tags which execute JavaScript, like the example given in the PoC description below.\n\n\n### PoC\n1. Register a new sensor (or device) or change the name of an existing one, which provides a location\n2. Change the name to something malicious, for example `test `\n For a new entity, it should work when setting the name. For old entities, go here:\n\"image\"\n\"image\"\n\"image\"\n
\n\"image\"\n\n**PS: the example pictures show changing the name of the device-tracker entity, which is wrong. Just change the name of the `remaining charge time`-sensor in order to validate this finding**\n\n3. Add a history graph card with the malicious sensor\n\"image\"\n\n5. Hover the graph for payload execution\n\"image\"\n\n\n### Impact\n\nThe impact of this vulnerability is that a user can target other users of the system and perform account takeover through client side exploitation of XSS.\n\nIn the context of this system, I believe the vulnerability to be less impactful than the CVSS metric describes. It is not displayed anywhere by default, it is not natural to display this history graph, and it also has no potential for being imported through seemingly innocent integrations. It also appears to rely on having used/using Android Auto. Other devices which has the same sensor can trigger the same vulnerability, and I expect there to exists cloud-based devices that would enable a threat actor to deliver the payload remotely.\n\nCredit: Robin Lunde - [https://robinlunde.com](https://robinlunde.com)", "title": "github - https://api.github.com/advisories/GHSA-46j8-vpx8-6p72" }, { "category": "description", "text": "Home Assistant is open source home automation software that puts local control and privacy first. Starting in version 2025.02 and prior to version 2026.01 the \"remaining charge time\"-sensor for mobile phones (imported/included from Android Auto it appears) is vulnerable cross-site scripting, similar to CVE-2025-62172. Version 2026.01 fixes the issue.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33045" }, { "category": "description", "text": "Home Assistant is open source home automation software that puts local control and privacy first. Starting in version 2025.02 and prior to version 2026.01 the \"remaining charge time\"-sensor for mobile phones (imported/included from Android Auto it appears) is vulnerable cross-site scripting, similar to CVE-2025-62172. Version 2026.01 fixes the issue.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33045.json" }, { "category": "other", "text": "0.00047", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "title": "CVSSV4" }, { "category": "other", "text": "7.3", "title": "CVSSV4 base score" }, { "category": "other", "text": "3.9", "title": "NCSC Score" }, { "category": "other", "text": "There is exploit data available from source Nvd, Is related to (a version of) an uncommon product", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5956160", "CSAFPID-5968858" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33045" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33045.json" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-46j8-vpx8-6p72" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd", "url": "https://github.com/home-assistant/core/security/advisories/GHSA-46j8-vpx8-6p72" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd", "url": "https://github.com/home-assistant/core/security/advisories/GHSA-mq77-rv97-285m" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-46j8-vpx8-6p72" }, { "category": "external", "summary": "Reference - github", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33045" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5956160", "CSAFPID-5968858" ] } ], "title": "CVE-2026-33045" } ] }