CVE-2026-44700 HIGH

CVE-2026-44700: Elixir WebRTC: Missing DTLS peer fingerprint validation in ex_webrtc client-role handshake

Vendor Elixir-Webrtc
Product ex_webrtc
Weakness CWE-295
Published May 14, 2026
Last update May 15, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Elixir WebRTC is an Elixir implementation of the W3C WebRTC API. Prior to 0.15.1 and 0.16.1, missing DTLS peer certificate fingerprint validation in the DTLS client (active) role removes one side of WebRTC's mutual authentication. The bug is not independently exploitable for media interception in standard deployments, but enables a full man-in-the-middle attack when chained with insecure signalling or a peer with similar validation gaps. This vulnerability is fixed in 0.15.1 and 0.16.1.

Key dates

02Disclosure timeline

May 14, 2026 CVE published
May 15, 2026 Record updated