Critical Security Update for Delve: Addressing Email Constraints and IPv6 Parsing Vulnerabilities
Summary
RLSA-2026:8842: Important: delve security update. Affects delve versions < 0:1.25.2-3.el10_1. Fixed in 0:1.25.2-3.el10_1. How to fix ↓
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Background
Delve is a powerful debugger designed specifically for the Go programming language. It aims to provide developers with a comprehensive and user-friendly debugging tool that simplifies the debugging process. Delve is widely used in the Go community for its ease of use and robust features, making it an essential tool for developers working with Go applications. However, recent vulnerabilities have been identified that could compromise the security of applications utilizing Delve.
Vulnerability Detail
The vulnerabilities in Delve stem from two main issues: the incorrect enforcement of email constraints in the crypto/x509 package (CVE-2026-27137) and the incorrect parsing of IPv6 host literals in the net/url package (CVE-2026-25679). These vulnerabilities could allow attackers to exploit the system, potentially leading to unauthorized access or data breaches. The ramifications of these vulnerabilities are significant, as they could affect the integrity and confidentiality of the applications using Delve.
How To Fix
Minimum fixed version
0:1.25.2-3.el10_1
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, users can implement additional validation checks for email constraints and ensure proper parsing of IPv6 addresses in their applications until the update is applied. However, the best course of action is to update to the patched version as soon as possible.
Conclusion
The vulnerabilities identified in Delve pose significant risks to applications utilizing this debugger. It is crucial for developers to update to the latest patched version to mitigate these risks. Utilizing tools like Vulert can help monitor and identify vulnerabilities in real-time, ensuring the security of your software.
See every vulnerability recorded for delve →
FAQ
The main vulnerabilities involve incorrect enforcement of email constraints and incorrect parsing of IPv6 host literals.
You can use Vulert, which monitors open-source vulnerabilities in your software. Simply upload your manifest file like package-lock.json to check for vulnerabilities.
The CVSS score for these vulnerabilities is 7.5, indicating a high level of severity.
Yes, a patch is available in the updated version of Delve (1.25.2-3.el10_1).
If immediate updating is not possible, implement additional validation checks as a temporary workaround.
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