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

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.

Published: 2026-02-11 Last update: 2026-02-25 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-26014 is rated Low Risk (39.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.62%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-26014

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.05% 0.62% +0.57%
2 2026-03-08 0.04% 0.05% +0.01%
3 2026-02-18 — 0.04% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-26014

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
5.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]

Weakness enumeration for CVE-2026-26014

GitHub Security Advisory for CVE-2026-26014

GHSA-9f3f-wv7r-qc8r · Severity: medium · Ecosystem: go — Pion DTLS's usage of random nonce generation with AES GCM ciphers risks leaking the authentication key

OS Trackers for CVE-2026-26014

vendor priority summary link
debian not yet assigned CVE-2026-26014 not yet assigned priority: Debian including 2 source packages (golang-github-pion-dtls-v3, golang-github-pion-dtls.v2), 6 status rows across 4 suites (bookworm, forky, sid, trixie): open 4, resolved 2. https://security-tracker.debian.org/tracker/CVE-2026-26014
redhat medium — https://access.redhat.com/security/cve/CVE-2026-26014
ubuntu medium CVE-2026-26014 medium priority: Ubuntu including 2 source packages (golang-github-pion-dtls-v3, golang-github-pion-dtls.v2), 8 status rows across 4 suites (jammy, noble, questing, upstream): DNE 4, needs-triage 4. https://ubuntu.com/security/CVE-2026-26014

Affected software / configurations for CVE-2026-26014

Vendor Product Version Raw CPE
pion dtls < 3.1.0 cpe:2.3:a:pion:dtls:*:*:*:*:*:*:*:*

References for CVE-2026-26014

cvelogic Threat Intelligence