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CVE-2026-44700— Elixir WebRTC: Missing DTLS peer fingerprint validation in ex_webrtc client-role handshake

Quick assessment

Affected
elixir-webrtc ex_webrtc
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 2

VendorProduct Version RangeStatus
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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
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

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III. Intelligence Information for CVE-2026-44700

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Patches & Fixes for CVE-2026-44700 (1)

Vendor Advisories for CVE-2026-44700 (1)

Security Blog Posts for CVE-2026-44700 (1)

Vendor Pages for CVE-2026-44700 (2)

IV. Related Vulnerabilities

Same weakness: CWE-295