CVE-2026-8450
Publication date 27 May 2026
Last updated 10 June 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libhttp-daemon-perl | 26.04 LTS resolute |
Fixed 6.16-1ubuntu0.26.04.1
|
| 25.10 questing |
Fixed 6.16-1ubuntu0.25.10.1
|
|
| 24.04 LTS noble |
Fixed 6.16-1ubuntu0.24.04.1
|
|
| 22.04 LTS jammy |
Fixed 6.13-1ubuntu0.2
|
|
| 20.04 LTS focal |
Fixed 6.06-1ubuntu0.1+esm1
|
|
| 18.04 LTS bionic |
Fixed 6.01-1ubuntu0.1+esm1
|
|
| 16.04 LTS xenial |
Fixed 6.01-1ubuntu0.16.04~esm2
|
|
| 14.04 LTS trusty |
Fixed 6.01-1ubuntu0.14.04~esm2
|
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CVSS version: CVSS v3.0
Base score
9.1 · Critical
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
Related Ubuntu Security Notices (USN)
- USN-8419-1
- HTTP-Daemon vulnerability
- 10 June 2026