Description
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.
Published: 2026-05-27
Score: 9.1 Critical
EPSS: 1.0% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to HTTP-Daemon 6.17 or later.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4639-1 libhttp-daemon-perl security update
Debian DSA Debian DSA DSA-6358-1 libhttp-daemon-perl security update
Ubuntu USN Ubuntu USN USN-8419-1 HTTP-Daemon vulnerability
History

Tue, 16 Jun 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Wed, 27 May 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 27 May 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Oalders
Oalders http::daemon
Vendors & Products Oalders
Oalders http::daemon

Wed, 27 May 2026 08:30:00 +0000

Type Values Removed Values Added
References

Wed, 27 May 2026 05:00:00 +0000

Type Values Removed Values Added
Description 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.
Title HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file()
Weaknesses CWE-73
CWE-78
References

Subscriptions

Oalders Http::daemon
cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-06-30T02:42:53.059Z

Reserved: 2026-05-12T21:26:04.212Z

Link: CVE-2026-8450

cve-icon Vulnrichment

Updated: 2026-06-22T07:58:11.660Z

cve-icon NVD

Status : Deferred

Published: 2026-05-27T05:16:23.067

Modified: 2026-06-17T11:03:57.190

Link: CVE-2026-8450

cve-icon Redhat

Severity : Important

Publid Date: 2026-05-27T04:22:26Z

Links: CVE-2026-8450 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T21:00:14Z

Weaknesses