# CVE-2026-8450: perl-HTTP-Daemon: HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file(). send_file() opens its string a... CVE-2026-8450 is fixed in 3 products on 1 platform, first by libhttp-daemon-perl 6.16-1ubuntu0.26.04.1, released May 26, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-8450 - Priority: High - CVSS: 9.1 (important) - EPSS: 0.0140 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 26, 2026 ## 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libhttp-daemon-perl Debian 12.15 (bookworm) | 6.16-1+deb13u1~deb12u1 | [DEBIAN-CVE-2026-8450](https://patchblox.com/security/data/fix/linux/debian-cve-2026-8450.md) | Jun 24, 2026 | | Linux | libhttp-daemon-perl Debian 13.5 (trixie) | 6.16-1+deb13u1 | [DEBIAN-CVE-2026-8450](https://patchblox.com/security/data/fix/linux/debian-cve-2026-8450.md) | Jun 24, 2026 | | Linux | libhttp-daemon-perl Debian 14 | 6.17-1 | [DEBIAN-CVE-2026-8450](https://patchblox.com/security/data/fix/linux/debian-cve-2026-8450.md) | Jun 24, 2026 | | Linux | libhttp-daemon-perl Ubuntu 18.04.6 LTS (bionic) | 6.01-1ubuntu0.1+esm1 | [libhttp-daemon-perl 6.01-1ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libhttp-daemon-perl-6.01-1ubuntu0.1-esm1.md) | Jun 24, 2026 | | Linux | libhttp-daemon-perl Ubuntu 20.04 LTS (focal) | 6.06-1ubuntu0.1+esm1 | [libhttp-daemon-perl 6.06-1ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libhttp-daemon-perl-6.06-1ubuntu0.1-esm1.md) | Jun 24, 2026 | | Linux | libhttp-daemon-perl Ubuntu 22.04.1 LTS (jammy) | 6.13-1ubuntu0.2 | [libhttp-daemon-perl 6.13-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libhttp-daemon-perl-6.13-1ubuntu0.2.md) | Jun 24, 2026 | | Linux | libhttp-daemon-perl Ubuntu 24.04.5 LTS (noble) | 6.16-1ubuntu0.24.04.1 | [libhttp-daemon-perl 6.16-1ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libhttp-daemon-perl-6.16-1ubuntu0.24.04.1.md) | Jun 24, 2026 | | Linux | libhttp-daemon-perl Ubuntu 25.10 (questing) | 6.16-1ubuntu0.25.10.1 | [libhttp-daemon-perl 6.16-1ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libhttp-daemon-perl-6.16-1ubuntu0.25.10.1.md) | Jun 24, 2026 | | Linux | libhttp-daemon-perl Ubuntu 26.04.1 LTS (resolute) | 6.16-1ubuntu0.26.04.1 | [libhttp-daemon-perl 6.16-1ubuntu0.26.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libhttp-daemon-perl-6.16-1ubuntu0.26.04.1.md) | May 26, 2026 | | Linux | perl-HTTP-Daemon RHEL 10 | 6.16-7.el10_0.1 | [RHSA-2026:93585](https://patchblox.com/security/data/fix/linux/rhsa-2026-93585.md) | May 27, 2026 | | Linux | perl-HTTP-Daemon RHEL 8 | 0:6.01-24.el8_10 | [RHSA-2026:36188](https://patchblox.com/security/data/fix/linux/rhsa-2026-36188.md) | Jul 7, 2026 | | Linux | perl-HTTP-Daemon RHEL 9 | 0:6.12-6.el9_8.1 | [RHSA-2026:36187](https://patchblox.com/security/data/fix/linux/rhsa-2026-36187.md) | Jul 7, 2026 | | Linux | perl-HTTP-Daemon almalinux 10 | 6.16-7.el10_2.1 | [ALSA-2026:36189](https://patchblox.com/security/data/fix/linux/alsa-2026-36189.md) | Jul 7, 2026 | | Linux | perl-HTTP-Daemon almalinux 8 | 6.01-24.el8_10 | [ALSA-2026:36188](https://patchblox.com/security/data/fix/linux/alsa-2026-36188.md) | Jul 7, 2026 | | Linux | perl-HTTP-Daemon almalinux 9 | 6.12-6.el9_8.1 | [ALSA-2026:36187](https://patchblox.com/security/data/fix/linux/alsa-2026-36187.md) | Jul 7, 2026 | | Linux | perl-HTTP-Daemon amzn 2023 | 6.16-1.amzn2023.0.1 | [ALAS2023-2026-1794](https://patchblox.com/security/data/fix/linux/alas2023-2026-1794.md) | Jun 8, 2026 | | Linux | perl-HTTP-Daemon ol 10 | 0:6.16-7.el10_2.1 | [ELSA-2026-36189](https://patchblox.com/security/data/fix/linux/elsa-2026-36189.md) | Jul 17, 2026 | | Linux | perl-HTTP-Daemon ol 8 | 0:6.01-24.el8_10 | [ELSA-2026-36188](https://patchblox.com/security/data/fix/linux/elsa-2026-36188.md) | Jul 7, 2026 | | Linux | perl-HTTP-Daemon ol 9 | 0:6.12-6.el9_8.1 | [ELSA-2026-36187](https://patchblox.com/security/data/fix/linux/elsa-2026-36187.md) | Jul 7, 2026 | | Linux | perl-HTTP-Daemon opensuse-leap 16.0 | 6.16-160000.3.1 | [OPENSUSE-SU-2026:21119-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21119-1.md) | Jun 20, 2026 | | Linux | perl-HTTP-Daemon rocky 10 | 0:6.16-7.el10_2.1 | [RLSA-2026:36189](https://patchblox.com/security/data/fix/linux/rlsa-2026-36189.md) | Jul 8, 2026 | | Linux | perl-HTTP-Daemon rocky 8 | 0:6.01-24.el8_10 | [RLSA-2026:36188](https://patchblox.com/security/data/fix/linux/rlsa-2026-36188.md) | Jul 8, 2026 | | Linux | perl-HTTP-Daemon rocky 9 | 0:6.12-6.el9_8.1 | [RLSA-2026:36187](https://patchblox.com/security/data/fix/linux/rlsa-2026-36187.md) | Jul 8, 2026 | | Linux | perl-HTTP-Daemon sles 15.6 | 6.01-150000.3.8.1 | [SUSE-SU-2026:2442-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2442-1.md) | Jun 18, 2026 | | Linux | perl-HTTP-Daemon sles 15.7 | 6.01-150000.3.8.1 | [SUSE-SU-2026:2442-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2442-1.md) | Jun 18, 2026 | | Linux | perl-HTTP-Daemon sles 16.0 | 6.16-160000.3.1 | [SUSE-SU-2026:22187-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22187-1.md) | Jun 20, 2026 | | Linux | perl-HTTP-Daemon-tests amzn 2023 | 6.16-1.amzn2023.0.1 | [ALAS2023-2026-1794](https://patchblox.com/security/data/fix/linux/alas2023-2026-1794.md) | Jun 8, 2026 | --- Data as of 2026-11-08T00:53:09Z UTC. 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