CVE-2026-40602 | home-assistant-ecosystem home-assistant-cli up to 0.x code injection (GHSA-33qf-q99x-wpm8)

VDB-358547 · CVE-2026-40602 · GHSA-33QF-Q99X-WPM8 HOME-ASSISTANT-ECOSYSTEM HOME-ASSISTANT-CLI UP TO 0.X CODE INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.0 $0-$5k 1.45+ Summaryinfo A vulnerability was found in home-assistant-ecosystem home-assistant-cli up to 0.x. It has been rated as critical. This affects an unknown part. The manipulation leads to code injection. This vulnerability is uniquely identified as CVE-2026-40602. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised. Detailsinfo A vulnerability was found in home-assistant-ecosystem home-assistant-cli up to 0.x and classified as critical. This issue affects an unknown function. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is: The Home Assistant Command-line interface (hass-cli) is a command-line tool for Home Assistant. Up to 1.0.0 of home-assitant-cli an unrestricted environment was used to handle Jninja2 templates instead of a sandboxed one. The user-supplied input within Jinja2 templates was rendered locally with no restrictions. This gave users access to Python's internals and extended the scope of templating beyond the intended usage. This vulnerability is fixed in 1.0.0. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-40602 since 04/14/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK. Upgrading to version 1.0.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Vendor home-assistant-ecosystem Name home-assistant-cli Version 0.x Website Product: https://github.com/home-assistant-ecosystem/home-assistant-cli/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.1 VulDB Meta Temp Score: 5.0 VulDB Base Score: 4.7 VulDB Temp Score: 4.5 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.6 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Code injection CWE: CWE-94 / CWE-74 / CWE-707 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: home-assistant-cli 1.0.0 Patch: github.com Timelineinfo 04/14/2026 CVE reserved 04/21/2026 +7 days Advisory disclosed 04/21/2026 +0 days VulDB entry created 04/21/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-33qf-q99x-wpm8 Status: Confirmed CVE: CVE-2026-40602 (🔒) GCVE (CVE): GCVE-0-2026-40602 GCVE (VulDB): GCVE-100-358547 Entryinfo Created: 04/21/2026 20:53 Changes: 04/21/2026 20:53 (65) Complete: 🔍 Cache ID: 99:58A:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸