Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade') Affecting bthome-ble package, versions [,3.15.1)
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Test your applications- Snyk IDSNYK-PYTHON-BTHOMEBLE-14830841
- published1 Jan 2026
- disclosed1 Jan 2026
- creditUnknown
Introduced: 1 Jan 2026
CVE NOT AVAILABLE CWE-757 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade bthome-ble to version 3.15.1 or higher.
Overview
bthome-ble is a BThome BLE support
Affected versions of this package are vulnerable to Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade') due to insufficient enforcement of encryption requirements in the _parse_bthome_v1 and _parse_bthome_v2 functions in src/bthome_ble/parser.py. An attacker can impersonate a device by sending plaintext BLE advertisements when a bindkey is configured.