CVE-2026-44700Elixir WebRTC: Missing DTLS peer fingerprint validation in ex_webrtc client-role handshake
- 8.7HighCVSS base score
- 0.26%Exploitation in 30 daysEPSS · top 83% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By GitHub_M
- 7 days later
· 7 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | High8.7 | 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 |
| NVDNVD · Deferred | 4.0 | High8.7 | 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:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.26% · top 83% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.
Affected products
- affected < 0.15.1
- affected >= 0.16.0, < 0.16.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Hexex_webrtcGHSA-qwfw-ggxw-577c (opens in a new tab)
References
References5
- https://github.com/elixir-webrtc/ex_webrtc/security/advisories/GHSA-qwfw-ggxw-577c (opens in a new tab)x_refsource_CONFIRM
- https://github.com/elixir-webrtc/ex_webrtc/issues/249 (opens in a new tab)x_refsource_MISC
- https://github.com/elixir-webrtc/ex_webrtc/pull/250 (opens in a new tab)x_refsource_MISC
- https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.15.1 (opens in a new tab)x_refsource_MISC
- https://github.com/elixir-webrtc/ex_webrtc/releases/tag/v0.16.1 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-30486 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-qwfw-ggxw-577c (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-44700)Record last updated .