How severe is CVE-2023-41899?

CVE-2023-41899 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-41899 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-41899?

CVE-2023-41899 affects Home-assistant. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-41899?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-41899 published?

CVE-2023-41899 was published on 2023-10-19 and last updated on 2026-06-17.

CVE-2023-41899

CVE-2023-41899 is a medium-severity vulnerability in Home-assistant with a CVSS 3.x base score of 6.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Home-assistant
Published: 2023-10-19
Last modified: 2026-06-17

Description

Home assistant is an open source home automation. In affected versions the `hassio.addon_stdin` is vulnerable to a partial Server-Side Request Forgery where an attacker capable of calling this service (e.g.: through GHSA-h2jp-7grc-9xpp) may be able to invoke any Supervisor REST API endpoints with a POST request. An attacker able to exploit will be able to control the data dictionary, including its addon and input key/values. This issue has been addressed in version 2023.9.0 and all users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as GitHub Security Lab (GHSL) Vulnerability Report: `GHSL-2023-162`.

Frequently asked questions

What is CVE-2023-41899?: Home assistant is an open source home automation. In affected versions the `hassio.addon_stdin` is vulnerable to a partial Server-Side Request Forgery where an attacker capable of calling this service (e.g.: through GHSA-h2jp-7grc-9xpp) may be able to invoke any Supervisor REST API endpoints with a POST request. An attacker able to exploit will be able to control the data dictionary, including its addon and input key/values. This issue has been addressed in version 2023.9.0 and all users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as GitHub Security Lab (GHSL) Vulnerability Report: `GHSL-2023-162`.
How severe is CVE-2023-41899?: CVE-2023-41899 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-41899 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-41899?: CVE-2023-41899 affects Home-assistant. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-41899?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-41899 published?: CVE-2023-41899 was published on 2023-10-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:home-assistant:home-assistant:*:*:*:*:*:*:*:*

More vulnerabilities in Home-assistant

CVE-2023-27482 — Critical (CVSS 10.0): homeassistant is an open source home automation tool. A remotely exploitable vulnerability bypassing authentication for…
CVE-2023-41897 — High (CVSS 8.8): Home assistant is an open source home automation. Home Assistant server does not set any HTTP security headers,…
CVE-2023-41895 — High (CVSS 8.8): Home assistant is an open source home automation. The Home Assistant login page allows users to use their local Home…
CVE-2026-54317 — High (CVSS 7.6): Home Assistant is open source home automation software that puts local control and privacy first. Prior to 2026.6.0,…
CVE-2020-36517 — High (CVSS 7.5): An information leak in Nabu Casa Home Assistant Operating System and Home Assistant Supervised 2022.03 allows a DNS…
CVE-2018-21019 — High (CVSS 7.5): Home Assistant before 0.67.0 was vulnerable to an information disclosure that allowed an unauthenticated attacker to…

All CVEs affecting Home-assistant →

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities

CVE-2026-47938 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by a Server-Side Request Forgery (SSRF)…
CVE-2026-35431 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Microsoft Entra ID Entitlement Management allows an unauthorized attacker to…
CVE-2026-32186 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Microsoft Bing allows an unauthorized attacker to elevate privileges over a…
CVE-2026-33107 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Azure Databricks allows an unauthorized attacker to elevate privileges over a…
CVE-2026-32871 — Critical (CVSS 10.0): FastMCP is a Pythonic way to build MCP servers and clients. Prior to version 3.2.0, the OpenAPIProvider in FastMCP…
CVE-2026-32169 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Azure Cloud Shell allows an unauthorized attacker to elevate privileges over a…

Browse all CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities →