Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-8450: HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file(). send_file() opens its string argument with Perl's 2-arg open(). The 2-arg form interprets magic prefixes: '| cmd' and 'cmd |' open a pipe to a subprocess, '> path' and '>> path' open the path for write or append. Untrusted input passed to send_file() can run OS commands at the daemon process UID. The read-pipe form ('cmd |') also leaks subprocess stdout into the HTTP response body. The write-mode forms can create or truncate files at attacker chosen paths.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | perl-HTTP-Daemon | 0:6.01-8.amzn2.0.2 |
Vulnerabilities 1
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Critical 9.1
HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file()
HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file(). send_file() opens its string argument with Perl's 2-arg open(). The 2-arg form interprets magic prefixes: '| cmd' and 'cmd |' open a pipe to a subprocess, '> path' and '>> …
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2026-8450.html