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CVE-2023-41899

Partial Server-Side Request Forgery in Home Assistant Core

HIGH
7.2
CVSS Score
Published: October 19, 2023 at 10:18 PM UTC
Updated: June 17, 2026 at 06:23 AM UTC
1 product affected across 1 vendorHome Assistant

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Severity
HIGH7.2
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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`.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Home Assistant· Home Assistant
95%
v < 2023.9.0
Affected range stops below 2023.9.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://github.com/home-assistant/core/security/advisories/GHSA-4r74-h49q-rr3h
x_refsource_MISCVendor Advisory
Source: [email protected]
https://github.com/home-assistant/core/security/advisories/GHSA-h2jp-7grc-9xpp

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-918

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