Critical Security Flaw in perl-HTTP-Daemon: Arbitrary Code Execution Risk
Summary
ALSA-2026:36188: Important: perl-HTTP-Daemon security update. Affects perl-HTTP-Daemon versions < 6.01-24.el8_10. Fixed in 6.01-24.el8_10. How to fix ↓
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Background
The perl-HTTP-Daemon package is a crucial component in the Perl programming ecosystem, providing the HTTP::Daemon class, which allows developers to create HTTP/1.1 servers that can listen for incoming requests on a socket. This package is widely used for building web applications and services in Perl, making it essential for many developers. However, a recent vulnerability has been identified that could allow attackers to execute arbitrary code through OS command injection, posing a significant risk to applications relying on this package.
Vulnerability Detail
The vulnerability, identified as CVE-2026-8450, arises from improper handling of file transfers in the send_file() method of the HTTP::Daemon class. An attacker could exploit this flaw by sending crafted requests that manipulate the command execution context, leading to arbitrary code execution on the server. This vulnerability can have severe ramifications, including unauthorized access to sensitive data, system compromise, and potential disruption of services.
How To Fix
Minimum fixed version
6.01-24.el8_10
This is the first release that contains the fix.
sudo dnf update perl-HTTP-DaemonTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, consider restricting access to the HTTP server or implementing additional input validation to mitigate the risk of exploitation until the package can be updated. Additionally, monitor logs for any suspicious activity related to HTTP requests.
Conclusion
The perl-HTTP-Daemon package has a critical vulnerability that could allow arbitrary code execution. It is essential for users of this package to update to the latest patched version to mitigate risks. Temporary workarounds can be implemented, but updating is the most effective solution.
See every vulnerability recorded for perl-HTTP-Daemon →
FAQ
CVE-2026-8450 is a security vulnerability in the perl-HTTP-Daemon package that allows for arbitrary code execution through OS command injection.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Simply upload your manifest file like package-lock.json to check for vulnerabilities.
The vulnerability can lead to unauthorized access, data breaches, and system compromise, making it critical to address promptly.
Yes, you can restrict access to the HTTP server and implement input validation as a temporary measure until the package is updated.
For detailed information, refer to the CVE page for CVE-2026-8450, which includes technical details and impact assessments.
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