Pion DTLS: Denial of service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message

published 2026-07-01 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-41133 , GHSA-wg4g-wm44-ch5j , GO-2026-6165

cvss: 6.3; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits: 0; none known

Pion DTLS is a Go implementation of Datagram Transport Layer Security. Versions prior to 3.1.4 are vulnerable to Remote Denial of Service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message. This issue has been fixed in version 3.1.4.

Patch / fix

fixed in 2 distros 3 links 4

go github.com/pion/dtls/v3 3.1.4
pion dtls 3.1.4

suse opensuse azure linux

govulncheck-vulndb SLES for SAP applications 16.0, SLES 16.0 0.0.20260827T195228-160000.1.1

suse advisories SUSE-SU-2026:23625-1

govulncheck-vulndb openSUSE Leap 16.0 0.0.20260827T195228-160000.1.1

opensuse advisories openSUSE-SU-2026:21761-1

telegraf Azure Linux 3.0 1.31.0-27

azure linux advisories AZL-92112

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

github.com/pion/dtls@49458d6 commit
github.com/pion/dtls#839 pull request
github.com/pion/dtls/releases/tag/v3.1.3 release
github.com/pion/dtls/releases/tag/v3.1.4 release

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 4 mo ago (2026-07-02)

Exploit prediction

0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.3	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CNA	4.0	6.3	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem	package	affected	fixed in
go	github.com/pion/dtls/v3	<3.1.4	3.1.4

Affected products

pion dtls

Classification

Weakness

CWE-125 Out-of-bounds Read
CWE-248 Uncaught Exception

References

github.com /pion/dtls/pull/839
web, patch
github.com /pion/dtls/commit/49458d604a4f3ebce1bf9587a0f3e5f3f6b4a55e
web, patch
github.com /pion/dtls/security/advisories/GHSA-wg4g-wm44-ch5j
web, advisory
nvd.nist.gov /vuln/detail/CVE-2026-54908
advisory
github.com /pion/dtls
package
github.com /pion/dtls/releases/tag/v3.1.3
web
github.com /pion/dtls/releases/tag/v3.1.4
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary