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From: Salvatore Bonaccorso <carnil@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: libhttp-daemon-perl: CVE-2026-8450
Message-ID: <177989394452.3119162.8344419120819952306.reportbug@eldamar.lan>
X-Mailer: reportbug 13.2.0
Date: Wed, 27 May 2026 16:59:04 +0200
Delivered-To: submit@bugs.debian.org

Source: libhttp-daemon-perl
Version: 6.16-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/libwww-perl/HTTP-Daemon/pull/89
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for libhttp-daemon-perl.

CVE-2026-8450[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-8450
    https://www.cve.org/CVERecord?id=CVE-2026-8450
[1] https://github.com/libwww-perl/HTTP-Daemon/pull/89
[2] https://lists.security.metacpan.org/cve-announce/msg/40435207/
[3] https://github.com/libwww-perl/HTTP-Daemon/commit/945d35141d94490f749640bd4390acd6a2193995

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore
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