CVE-2026-8450
HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file()
- State
- Published
- Severity
- 9.1 Critical
- Published
- May 27, 2026
- Updated
- Jul 15, 2026
- Reserved
- May 12, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | CISA-ADP |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
HTTP::DaemonOALDERS |
|
References
- https://github.com/libwww-perl/HTTP-Daemon/pull/89issue-tracking
- https://github.com/libwww-perl/HTTP-Daemon/commit/945d35141d94490f749640bd4390acd6a2193995.patchpatch
- https://metacpan.org/release/OALDERS/HTTP-Daemon-6.17/changesrelease-notes
- http://www.openwall.com/lists/oss-security/2026/05/27/5
- https://lists.debian.org/debian-lts-announce/2026/06/msg00028.html
- https://access.redhat.com/security/cve/CVE-2026-8450vdb-entry
- RHBZ#2481773issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8450.json
- https://access.redhat.com/errata/RHSA-2026:36189vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36188vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36187vendor-advisory
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