EUVD-2026-32050
GHSA-3hc6-3p33-wq57
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
3DescriptionNVD
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.
AnalysisAI
OS command injection in Perl's HTTP::Daemon before 6.17 (libwww-perl) lets remote unauthenticated attackers execute commands as the daemon process UID when request-derived input reaches the send_file() method. The method opened its string argument with Perl's 2-argument open(), whose magic prefixes ('| cmd', 'cmd |', '> path', '>> path') spawn subprocesses or write/truncate files; the read-pipe form additionally leaks subprocess stdout into the HTTP response body. …
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RemediationAI
Within 24 hours: Conduct inventory of all systems and applications using HTTP::Daemon/libwww-perl and their current versions. Within 7 days: Apply vendor patch to upgrade HTTP::Daemon to version 6.17 or later on all affected systems, prioritizing internet-facing services. …
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