Pion DTLS vulnerable to denial of service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 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 · score source

EPSS

• CVE-2026-54908: 0.54% estimated exploitation activity in the next 30 days; percentile 45.59 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact Remote denial of service via panic while parsing a crafted ECDHEPSK ServerKeyExchange message. Patches Upgrade to v3.1.4 or later. This version includes this patch https://github.com/pion/dtls/pull/839 which fixes the issue. Workarounds No work around; please upgrade to v3.1.4 or a newer version.

Published by the source

31 Jul 2026, 22:06 UTC

Last modified by the source

18 Aug 2026, 17:15 UTC

Source last checked

26 Oct 2026, 15:28 UTC

1. Revision 4 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-wg4g-wm44-ch5j

2. Revision 3 · amended · 25 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GO-2026-6165

4. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-wg4g-wm44-ch5j

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# Patch Next advisory brief: CVE-2026-54908

Advisory: Pion DTLS vulnerable to denial of service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message
IDs: CVE-2026-54908, GHSA-wg4g-wm44-ch5j
Record: https://patchnext.com/advisories/cve-2026-54908 (revision 4, source checked 26 Oct 2026, 15:28 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/pion/dtls/v3 3.1.4. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/pion/dtls/v3: affected <= 3.1.2; fixed in 3.1.4

## Suggested inspection (read-only)
- Go github.com/pion/dtls/v3: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/pion/dtls/v3.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-wg4g-wm44-ch5j (OSV record GHSA-wg4g-wm44-ch5j lists affected ranges: Go github.com/pion/dtls/v3 >=0 <3.1.4 (fixed))
- Verified: https://osv.dev/vulnerability/GO-2026-6165 (OSV record GO-2026-6165 lists affected ranges: Go github.com/pion/dtls/v3 >=0 <3.1.4 (fixed))
- Verified: https://github.com/advisories/GHSA-wg4g-wm44-ch5j (GitHub-reviewed advisory GHSA-wg4g-wm44-ch5j lists affected ranges: Go github.com/pion/dtls/v3 >=0 <=3.1.2)

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