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Vulnerability record · CVE-2026-44700 · published 14 May 2026

CVE-2026-44700: Improper certificate validation vulnerability

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.

8.7 CVSS 4.0 High EPSS 0.40% · top 68.1% CWE-295 · Improper certificate validation Deferred
8.7CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/elixir-webrtc/ex_webrtc/issues/249
https://github.com/elixir-webrtc/ex_webrtc/pull/250
https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.15.1
https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.16.1
https://github.com/elixir-webrtc/ex_webrtc/security/advisories/GHSA-qwfw-ggxw-577c

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Source: NIST National Vulnerability Database (record CVE-2026-44700), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.