CVE-2026-64825Suited to automated attack · CISA

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

CVSS score

9.0

EPSS probability

%0.6

Risk score

0.1

Published

2 mo ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

Checking session…

Vulnerability description

DayBreach CVE AI Research

CVE-2026-64825 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

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.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-64825 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	home-assistant	Home Assistant Core	View
2	pypi	homeassistant	View

Total affected vendors: 2|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
9.3	CVSS 3.x	—	Vector not published	GitHub Advisory
9.3	CVSS V31	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L	NVD
9.3	CVSS V3_1	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L	CVE CNA
9.0	CVSS 4.0	—	Vector not published	GitHub Advisory
9.0	CVSS V40	CRITICAL	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	NVD
9.0	CVSS V4_0	CRITICAL	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	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

3 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

osvhomeassistant2026.6.0

OSV düzeltilmiş sürüm: 2026.6.0

cvelist

Patch Commit

Open source

reference

Patch Commit

Open source

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Apply the official update named in the evidence only to the matching product and version.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-64825 is associated with the following CWEs:

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-64825 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

UserGerekmiyor

Official Sources and Advisories

Release Notesvendor-advisory Pull Requestvendor-advisory Patch Commitpatch https://www.vulncheck.com/advisories/home-assistant-core-path-traversal-file-write-via-backup-uploadvendor-advisory https://nvd.nist.gov/vuln/detail/CVE-2026-64825vendor-advisory https://github.com/advisories/GHSA-5hxg-r395-fqxxvendor-advisory https://github.com/home-assistant/corevendor-advisory https://pypi.org/project/homeassistantvendor-advisory

CVSS Vector Radar Chart

9.0 / 10

Vulnerability Scoring Details

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)Low

Yama doğrulandı

3 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

home-assistant

pypi

Weakness Type (CWE & CAPEC)

CWE-22

Similar Vulnerabilities

9.3

CVE-2026-64849 Actively exploited

MLflow: Unauthenticated full-read SSRF in webhook delivery: _validate_webhook_url bypassed via unvalidated HTTP redirects (and DNS rebinding)

VendormlflowProductmlflow+4 etkilenen

Patch verifiedEPSS %101 mo ago

9.8

CVE-2026-42208 Actively exploited

SQL injection in Litellm

VendorlitellmProductlitellm+4 etkilenen

Patch verifiedEPSS %65 mo ago

9.6

CVE-2026-57496

netlicensing-mcp: REST Path Traversal Bypasses Token Redaction

VendorpypiProductnetlicensing-mcp

Patch status unknown3 mo ago

6.5

CVE-2026-48710 Actively exploited

Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks

VendorKludexProductstarlette+12 etkilenen

Patch verifiedEPSS %74 mo ago

8.8

CVE-2026-59177

ESPHome Device Builder Dashboard: Unauthenticated dashboard access via the HA add-on ingress site bound to all interfaces

VendorpypiProductesphome-device-builder

Patch verified1 mo ago

8.6

CVE-2026-12075

Natural Language Toolkit (NLTK): DNS-rebinding SSRF filter bypass in nltk.pathsec.urlopen (nltk.download / nltk.data.load) defeats ENFORCE mode

VendorpypiProductnltk

Patch verified2 mo ago

Get this vulnerability through the API

Affected products, version ranges, exploitation status and patch information in a single request, with a free key.

Get a free key Documentation

curl -H "x-api-key: $DAYBREACH_API_KEY" \
  "https://api.enginteksut.com.tr/api/v1/intel/cves/CVE-2026-64825"