Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-64825

Home Assistant Core < 2026.6.0 Path Traversal File Write via Backup Upload
Back to all
CVE

CVE-2026-64825

Home Assistant Core < 2026.6.0 Path Traversal File Write via Backup Upload

Home Assistant Core before 2026.6.0 contains a path traversal vulnerability that allows unauthenticated attackers to write arbitrary files to any directory on the host filesystem by uploading a crafted backup archive during the initial onboarding window. Attackers can manipulate the 'name' field inside the uploaded archive's backup.json to supply an absolute path, causing pathlib.Path.truediv to discard the configured backup directory prefix and write attacker-controlled content to arbitrary locations, with full filesystem access when the process runs as root.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9
-
4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L/E:X/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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64825.json, https://github.com/home-assistant/core/releases/tag/2026.6.0, https://nvd.nist.gov/vuln/detail/CVE-2026-64825, https://www.vulncheck.com/advisories/home-assistant-core-path-traversal-file-write-via-backup-upload, https://github.com/home-assistant/core/pull/172368, https://github.com/home-assistant/core/commit/567fe858289876b68b8162a77bd46e1e1af79752, https://github.com/home-assistant/core

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.0058%
EPSS Percentile
0.45552%
Introduced Version
0
Fix Available
567fe858289876b68b8162a77bd46e1e1af79752

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading