CVE-2026-53455 Blueprint Studio Git credential helper command injection
Attackers can execute arbitrary shell commands via malicious Git credentials in Blueprint Studio, compromising Home Assistant configuration data.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-53455?
CVE-2026-53455 is a high-severity command injection vulnerability in ha-china blueprint-studio, published on 18 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio generated a shell-based Git credential helper in custom_components/blueprint_studio/backend/git_manager.py by interpolating the configured Git username and token directly into executable helper script content without validating credential values. An attacker able to set Git credentials could include newline characters or shell syntax in a username or token. When Git executed the generated credential helper, the injected shell commands ran with the operating-system privileges of Home Assistant and could access or modify Home Assistant configuration data. This issue is fixed in version 2.5.2.
Weakness: CWE-78
Which versions are affected by CVE-2026-53455?
How do I fix CVE-2026-53455?
No fix has been published for CVE-2026-53455 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-53455 being exploited?
There is no known exploitation of CVE-2026-53455 in the wild and no public exploit code.
Sources
Also known as GHSA-wjpc-mc3f-w5rg.