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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00064.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
elixir-webrtc ex_webrtc affected
Version Status Constraints
< 0.15.1 affected —
>= 0.16.0, < 0.16.1 affected —

No data.

No data.

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Vendors Products
Elixir-webrtc Subscribe
Ex Webrtc Subscribe

Project Subscriptions

Vendors Products
Elixir-webrtc Subscribe
Ex Webrtc Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-qwfw-ggxw-577c ex_webrtc client-role handshake is missing DTLS peer fingerprint validation
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/elixir-webrtc/ex_webrtc/issues/249 cve-icon cve-icon
https://github.com/elixir-webrtc/ex_webrtc/pull/250 cve-icon cve-icon
https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.15.1 cve-icon cve-icon
https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.16.1 cve-icon cve-icon
https://github.com/elixir-webrtc/ex_webrtc/security/advisories/GHSA-qwfw-ggxw-577c cve-icon cve-icon
History

Sun, 17 May 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Elixir-webrtc
Elixir-webrtc ex Webrtc
Vendors & Products Elixir-webrtc
Elixir-webrtc ex Webrtc

Fri, 15 May 2026 12:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Thu, 14 May 2026 21:15:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-15T11:22:24.715Z

Reserved: 2026-05-07T17:07:09.317Z

Link: CVE-2026-44700

cve-icon Vulnrichment

Updated: 2026-05-15T11:22:19.343Z

cve-icon NVD

Status : Deferred

Published: 2026-05-14T21:16:47.907

Modified: 2026-05-15T14:53:48.823

Link: CVE-2026-44700

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-17T17:01:55Z

Weaknesses