Medium 5.9Published Feb 11, 2026

CVE-2026-26014Pion DTLS uses random nonce generation with AES GCM ciphers risks leaking the authentication key

Updated under an hour ago (Oct 26, 2026, 8:40 AM ET)

Does this affect you?

It affects pion dtls. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for pion dtls

Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-200
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Feb 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

pion dtls pion:dtls (from the name)	= 3.1.0; before 3.0.11	CNA record
pion dtls pion:dtls	before 3.1.0	NVD

References

https://github.com/pion/dtls/security/advisories/GHSA-9f3f-wv7r-qc8rx-refsource-confirm, patch, vendor-advisory
https://github.com/pion/dtls/pull/796x-refsource-misc, issue-tracking
https://github.com/pion/dtls/commit/61762dee8217991882c5eb79856b9e7a73ee349fx-refsource-misc, patch
https://github.com/pion/dtls/commit/90e241cfec2985715efdd3d005972847462a67d6x-refsource-misc, patch
https://github.com/pion/dtls/releases/tag/v3.0.11x-refsource-misc, release-notes
https://github.com/pion/dtls/releases/tag/v3.1.1x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.