Critical Delve Debugger Vulnerability: Denial of Service Risks
Summary
RLSA-2026:23102: Important: delve security update. Affects delve versions < 0:1.26.1-2.el10_2. Fixed in 0:1.26.1-2.el10_2. How to fix ↓
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Background
Delve is a powerful debugger designed for the Go programming language, aimed at providing developers with a simple yet comprehensive debugging tool. Its user-friendly interface allows developers to troubleshoot their applications effectively. However, recent vulnerabilities have exposed Delve to potential Denial of Service (DoS) attacks, which could disrupt its functionality and compromise application stability.
Vulnerability Detail
The vulnerabilities identified in Delve stem from issues in the Go crypto/x509 and crypto/tls packages. Specifically, CVE-2026-32280, CVE-2026-32281, and CVE-2026-32283 highlight critical Denial of Service vulnerabilities. These issues arise from inefficient certificate chain validation and multiple TLS 1.3 key update messages, which can lead to service disruptions. Attackers could exploit these vulnerabilities to overwhelm the debugger, causing it to become unresponsive and potentially affecting the applications being debugged.
How To Fix
Minimum fixed version
0:1.26.1-2.el10_2
This is the first release that contains the fix.
sudo dnf update delveTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, consider limiting the use of Delve in production environments until the update is applied. Additionally, monitor your applications closely for any unusual behavior that may indicate an attempted exploitation of these vulnerabilities.
Conclusion
The recent vulnerabilities in Delve pose significant risks, particularly in terms of Denial of Service attacks. It is crucial for users to update to the latest patched version to mitigate these risks. By staying informed and proactive, developers can ensure the stability and security of their applications.
See every vulnerability recorded for delve →
FAQ
Delve is a debugger for the Go programming language, designed to help developers troubleshoot their applications efficiently.
The main vulnerabilities include Denial of Service risks due to inefficient certificate chain validation and issues with TLS 1.3 key updates.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The CVSS score for this vulnerability is 7.5, indicating a high severity level.
You can update the Delve package by running 'sudo dnf update delve' in your terminal, ensuring you have access to the AppStream repository.
References
Related vulnerabilities
Recent vulnerabilities recorded for delve.
