CVE-2026-26014: Vulnerability in github.com/pion/dtls Due to Random Nonce Generation with AES GCM Ciphers
Summary
CVE-2026-26014: Usage of random nonce generation with AES GCM ciphers risks leaking the authentication key in github.com/pion/dtls. Affected versions are not published. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The github.com/pion/dtls package is a Go implementation of the Datagram Transport Layer Security (DTLS) protocol, which is used to secure communications over a network. It provides features such as encryption, integrity, and authentication for datagram-based applications. The package is widely used in real-time communication applications, making its security paramount. However, it has been found to have a vulnerability related to the random generation of nonces when using AES GCM ciphers, which can lead to serious security risks.
Vulnerability Detail
The vulnerability arises from the use of random nonce generation with AES GCM ciphers in the github.com/pion/dtls package. This approach can potentially leak the authentication key, compromising the security of encrypted communications. If an attacker can predict or manipulate the nonce, they may be able to decrypt sensitive information or impersonate legitimate users, leading to unauthorized access and data breaches.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, consider using a different cipher mode that does not rely on random nonce generation or implement a custom nonce generation strategy that ensures uniqueness and unpredictability. However, this is not a long-term solution and updating to the patched version is strongly recommended.
Conclusion
The CVE-2026-26014 vulnerability in the github.com/pion/dtls package poses a significant risk due to the insecure nonce generation with AES GCM ciphers. It is crucial for users of this package to update to the patched versions to ensure the security of their applications. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
See every vulnerability recorded for github.com/pion/dtls →
FAQ
CVE-2026-26014 is a vulnerability in the github.com/pion/dtls package that involves the insecure generation of nonces when using AES GCM ciphers, potentially leading to key leakage.
If your application uses the affected versions of the github.com/pion/dtls package, it may be at risk of unauthorized access and data breaches due to potential key leakage.
You should update the github.com/pion/dtls package to the latest patched version as soon as possible to mitigate the risk.
Yes, you can use Vulert, which allows you to monitor and alert for open-source vulnerabilities in your software. You can check if your application is affected by this vulnerability using the Vulert playground without any signup.
The patched versions are 3.0.11 for the 3.0.x series and 3.1.1 for the 3.1.x series of the github.com/pion/dtls package.
References
Related vulnerabilities
Recent vulnerabilities recorded for github.com/pion/dtls.
