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GHSA-9f3f-wv7r-qc8r

MediumCVSS 5.9 / 10
Published Feb 11, 2026·Last modified Feb 19, 2026
Affected Components(0)

No affected components available

Description

Impact

Pion DTLS versions v1.0.0 through v3.0.10 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".

Patches

Upgrade to v3.1.1 or later. This version includes PR #796, which uses the 64-bit sequence number to populate the nonce_explicit part of the GCM nonce. This is according to best practice outlined in RFC 9325 section 7.2.1.

v3.0.11 is a backport patch supporting Go v1.21

Workarounds

There are no workarounds without upgrading to version v3.0.11, v3.1.1 or later.

References

Commit fixing the bug: https://github.com/pion/dtls/commit/61762dee8217991882c5eb79856b9e7a73ee349f Commit fixing the bug (backport): 90e241c Pull request: #796

Risk Scores
Base Score
5.9

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.

Threat Intelligence
5.4

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.62%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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