CVE-2026-44700

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

Published May 14, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-qwfw-ggxw-577c ex_webrtc client-role handshake is missing DTLS peer fingerprint validation
History
Type Values Removed Values Added
First Time appeared Elixir-webrtc
Elixir-webrtc ex Webrtc
Vendors & Products Elixir-webrtc
Elixir-webrtc ex Webrtc
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Elixir WebRTC: Missing DTLS peer fingerprint validation in ex_webrtc client-role handshake
Weaknesses CWE-295
References
Metrics cvssV4_0

{'score': 8.7, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 15, 2026, 11:22 AM
Reserved
May 7, 2026, 5:07 PM
Status
Deferred
Published
May 14, 2026, 9:16 PM
Modified
Oct 26, 2026, 2:10 PM