CVE-2026-44700 Details
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.
A vulnerability in Elixir WebRTC's DTLS client role, present in versions prior to 0.15.1 and 0.16.1, allows for a man-in-the-middle attack by missing validation of the peer certificate's fingerprint against the SDP offer. While this flaw does not enable media interception on its own, it could be exploited in conjunction with insecure signaling or a peer with similar validation issues, undermining WebRTC's mutual authentication.
Users should upgrade to Elixir WebRTC versions 0.15.1 or 0.16.1, both of which include the necessary DTLS fingerprint validation fix.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 14, 2026CISA-ADP
Assessed May 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/elixir-webrtc/ex_webrtc/issues/249 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/elixir-webrtc/ex_webrtc/pull/250 | [email protected] | Issue TrackingVendor |
| https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.15.1 | [email protected] | AdvisoryRelease NotesVendor |
| https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.16.1 | [email protected] | AdvisoryRelease NotesVendor |
| https://github.com/elixir-webrtc/ex_webrtc/security/advisories/GHSA-qwfw-ggxw-577c | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-295 | Improper Certificate Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Elixir WebRTC | All versions |
CPE
Remediation
| |
| Elixir WebRTC ex_webrtc | All versions |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 14, 2026 | New CVE Received | [email protected] |