CVE-2026-26014

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

MEDIUM
5.9
CVSS Score
Published: February 11, 2026 at 09:07 PM UTC
Updated: June 17, 2026 at 10:25 AM UTC
1 product affected across 1 vendorDtls

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Severity
MEDIUM5.9
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

Pion DTLS is a Go implementation of Datagram Transport Layer Security. Pion DTLS versions v1.0.0 through v3.1.0 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 v3.1.0 or later.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.0.11v < 3.1.0= 3.1.0
Affected range stops below 3.0.11, so it looks safe — our inference, not a vendor statement

References (7)

x_refsource_CONFIRMPatchVendor Advisory
Source: cverecord
https://github.com/pion/dtls/security/advisories/GHSA-9f3f-wv7r-qc8r
x_refsource_MISCIssue Tracking
Source: cverecord
https://github.com/pion/dtls/pull/796
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/pion/dtls/releases/tag/v3.0.11
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/pion/dtls/releases/tag/v3.1.1

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.9MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-200NVD-CWE-noinfo

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