CVE-2026-26014

Pion DTLS uses random nonce generation with AES GCM ciphers risks leaking the authentication key

CVSS 3.1 5.9 MEDIUMEUVD CVSS 3.1 5.9 CVSS 3.1 · [email protected] · Secondary 5.9 MEDIUMCVSS 3.1 · [email protected] · Primary 5.9 MEDIUMCVSS_V3 Publisher rating MODERATEFixed by github.com/pion/dtls/v3 3.1.1 Fixed by github.com/pion/dtls/v3 3.0.11osv · severity unknownFixed by github.com/pion/dtls/v3 3.0.11 Fixed by github.com/pion/dtls/v3 3.1.1KEV status unknown

Original advisory

cve-program · CVE-2026-26014

Published

Pion DTLS is a Go implementation of Datagram Transport Layer Security. Pion DTLS versions v1.0.0 through v3.0.10 and 3.1.0 use random nonce generation with AES GCM ciphers, which makes it easier for remote attackers to obtain the authentication key and spoof data by leveraging the reuse of a nonce in a session and a "forbidden attack". Upgrade to v3.0.11, v3.1.1, or later.

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euvd · EUVD-2026-6169

Published

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nvd · CVE-2026-26014

Published

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osv · GHSA-9f3f-wv7r-qc8r

Published

### Impact Pion DTLS versions v1.0.0 through v3.0.10 use random nonce generation with AES GCM ciphers, which makes it easier for remote attackers to obtain the authentication key and spoof data by leveraging the reuse of a nonce in a session and a "forbidden attack". ### Patches Upgrade to v3.1.1 or later. This version includes PR #796, which uses the 64-bit sequence number to populate the `nonce_explicit` part of the GCM nonce. This is according to best practice outlined in [RFC 9325 section 7.2.1](https://www.rfc-editor.org/rfc/rfc9325#section-7.2.1). v3.0.11 is a backport patch supporting Go v1.21 ### Workarounds There are no workarounds without upgrading to version v3.0.11, v3.1.1 or later. ### References Commit fixing the bug: https://github.com/pion/dtls/commit/61762dee8217991882c5eb79856b9e7a73ee349f Commit fixing the bug (backport): 90e241c Pull request: #796

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osv · GO-2026-4479

Published

Usage of random nonce generation with AES GCM ciphers risks leaking the authentication key in github.com/pion/dtls

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Affected versions, risk and source history

Exploitation and risk

Source status

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cve-program · CVE-2026-26014

Published

Pion DTLS uses random nonce generation with AES GCM ciphers risks leaking the authentication key

Source published: 11 Feb 2026 21:07:50 UTC
Source modified: 13 Feb 2026 14:18:02 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

euvd · EUVD-2026-6169

Published

Pion DTLS is a Go implementation of Datagram Transport Layer Security. Pion DTLS versions v1.0.0 through v3.0.10 and 3.1.0 use random nonce generation with AES GCM ciphers, which makes it easier for remote attackers to obtain the authentica…

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Feb 11, 2026, 9:07:50 PM

dateUpdated: Feb 13, 2026, 2:18:02 PM

Source published: Feb 11, 2026, 9:07:50 PM (timezone not stated)
Source modified: Feb 13, 2026, 2:18:02 PM (timezone not stated)
Saved here: 15 Nov 2026 08:33:26 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 3.1 · 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd · CVE-2026-26014

Published

Pion DTLS is a Go implementation of Datagram Transport Layer Security. Pion DTLS versions v1.0.0 through v3.0.10 and 3.1.0 use random nonce generation with AES GCM ciphers, which makes it easier for remote attackers to obtain the authentica…

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-200 · NVD-CWE-noinfo

Original publisher date fields

published: 2026-02-11T21:16:21.257

lastModified: 2026-06-17T10:25:36.033

1 source CPE criteria · context only

cpe:2.3:a:pion:dtls:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 11 Feb 2026 21:16:21 UTC
Source modified: 17 Jun 2026 10:25:36 UTC
Saved here: 25 Oct 2026 06:17:22 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · [email protected] · Secondary · 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS 3.1 · [email protected] · Primary · 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

osv · GHSA-9f3f-wv7r-qc8r

Published

Pion DTLS's usage of random nonce generation with AES GCM ciphers risks leaking the authentication key

Source published: 11 Feb 2026 15:13:12 UTC
Source modified: 10 Sep 2026 03:50:34 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Publisher rating · MODERATE

osv · GO-2026-4479

Published

Usage of random nonce generation with AES GCM ciphers risks leaking the authentication key in github.com/pion/dtls

Source published: 19 Feb 2026 17:28:55 UTC
Source modified: 20 Feb 2026 20:43:58 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.