CVE-2026-44700— Elixir WebRTC: Missing DTLS peer fingerprint validation in ex_webrtc client-role handshake
Possible ATT&CK Techniques 1AI
T1557 · Adversary-in-the-MiddleAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| elixir-webrtc | ex_webrtc | < 0.15.1 | affected |
>= 0.16.0, < 0.16.1 | affected |
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I. Basic Information for CVE-2026-44700
Vulnerability Information
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Vulnerability Title
Elixir WebRTC: Missing DTLS peer fingerprint validation in ex_webrtc client-role handshake
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
证书验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
ex_webrtc 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ex_webrtc是Elixir WebRTC开源的一个基于Elixir语言的WebRTC实时通信库。 ex_webrtc 0.15.1之前版本和0.16.1之前版本存在信任管理问题漏洞，该漏洞源于DTLS客户端角色缺少对等证书指纹验证，可能导致中间人攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| elixir-webrtc | ex_webrtc | < 0.15.1 | - |
II. Public POCs for CVE-2026-44700
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/elixir-webrtc/ex_webrtc/pull/250x_refsource_MISC
- https://github.com/elixir-webrtc/ex_webrtc/issues/249x_refsource_MISC
- https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.15.1x_refsource_MISC
- https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.16.1x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-44700
IV. Related Vulnerabilities
Same weakness: CWE-295
V. Comments for CVE-2026-44700
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