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.

Read the publisher's advisory

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

cve-program · CVE-2026-26014

Published

dtls

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "pion",
                    "product": "dtls",
                    "versions": [
                        {
                            "version": "= 3.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "< 3.0.11",
                            "status": "affected"
                        }
                    ]
                }

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

euvd · EUVD-2026-6169

Published

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

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

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

nvd · CVE-2026-26014

Published

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.

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

osv · GHSA-9f3f-wv7r-qc8r

Published

github.com/pion/dtls/v3

SEMVER · introduced 3.1.0 → fixed 3.1.1

1 versions listed as affected

3.1.0

github.com/pion/dtls/v2

SEMVER · introduced 0 → last_affected 2.2.12

github.com/pion/dtls

SEMVER · introduced 0 → last_affected 1.5.4

github.com/pion/dtls/v3

SEMVER · introduced 0 → fixed 3.0.11

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

osv · GO-2026-4479

Published

github.com/pion/dtls

SEMVER · introduced 0

github.com/pion/dtls/v2

SEMVER · introduced 0

github.com/pion/dtls/v3

SEMVER · introduced 3.0.10 → fixed 3.0.11 → introduced 3.1.0 → fixed 3.1.1

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