Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| pion | dtls | = 3.1.0, < 3.0.11 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | golang-github-pion-dtls-v3 | 3.1.2-1 | — |
| Debian 14 | golang-github-pion-dtls.v2 | No fix yet | — |
| Debian 13 | golang-github-pion-dtls.v2 | No fix yet | — |
| Debian 12 | golang-github-pion-dtls.v2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | golang-github-pion-dtls-v3 +1 | No fix yet | — |
| Ubuntu 26.04 LTS | golang-github-pion-dtls-v3 +1 | No fix yet | — |
| Ubuntu 25.10 | golang-github-pion-dtls.v2 | No fix yet | — |
| Ubuntu 24.04 LTS | golang-github-pion-dtls.v2 | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20260226T182644-150000.1.149.1 | SUSE-SU-2026:0757-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | telegraf | 1.31.0-15 | — |
| Azure Linux 2 (CBL-Mariner) | telegraf | 1.29.4-21 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | frp | 0.68.1-r0 | — |
| Wolfi rolling | ipfs-cluster | 1.1.5-r4 | — |
| Wolfi rolling | k3s +1 | 1.35.1.1-r1 | — |
| Wolfi rolling | k3s-1.32 +1 | 1.32.13.1-r2 | — |
| Wolfi rolling | k3s-1.34 +1 | 1.34.8.1-r0 | — |
| Wolfi rolling | k3s-1.35 +1 | 1.35.5.1-r0 | — |
| Wolfi rolling | kubo | 0.39.0-r5 | — |
| Wolfi rolling | op-geth +4 | 1.101702.3-r0 | — |
| Wolfi rolling | op-geth-compat | 1.101702.3-r3 | — |
| Wolfi rolling | spegel | 0.6.0-r4 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/pion/dtls | <= 1.5.4 | — | GHSA-9f3f-wv7r-qc8r |
| Go | github.com/pion/dtls | all versions | — | GO-2026-4479 |
| Go | github.com/pion/dtls/v2 | <= 2.2.12 | — | GHSA-9f3f-wv7r-qc8r |
| Go | github.com/pion/dtls/v2 | all versions | — | GO-2026-4479 |
| Go | github.com/pion/dtls/v3 | >= 3.1.0, < 3.1.1 | 3.1.1 | GHSA-9f3f-wv7r-qc8r |
| Go | github.com/pion/dtls/v3 | < 3.0.11 | 3.0.11 | GHSA-9f3f-wv7r-qc8r |
| Go | github.com/pion/dtls/v3 | >= 3.0.10, < 3.0.11 · >= 3.1.0, < 3.1.1 | 3.0.11, 3.1.1 | GO-2026-4479 |
Advisories 2
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- SUSE-SU-2026:0757-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Mar 4, 2026
References
- https://github.com/pion/dtls/security/advisories/GHSA-9f3f-wv7r-qc8r
- https://github.com/pion/dtls/pull/796
- https://github.com/pion/dtls/commit/61762dee8217991882c5eb79856b9e7a73ee349f
- https://github.com/pion/dtls/commit/90e241cfec2985715efdd3d005972847462a67d6
- https://github.com/pion/dtls/releases/tag/v3.0.11
- https://github.com/pion/dtls/releases/tag/v3.1.1