CVE-2026-8450
CRITICAL EPSS 59.1%
Published May 27, 20261mo ago · Modified Jun 22, 20261w ago
9.1 CVSS 3.1
Published May 27, 2026 1mo ago
Last Modified Jun 22, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
59.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 2
CWE-73
CWE-78 OS Command Injection Injection
References 5
- openwall.com http://www.openwall.com/lists/oss-security/2026/05/27/5
- github.com https://github.com/libwww-perl/HTTP-Daemon/commit/945d35141d94490f749640bd4390acd6a2193995.patch
- github.com https://github.com/libwww-perl/HTTP-Daemon/pull/89
- lists.debian.org https://lists.debian.org/debian-lts-announce/2026/06/msg00028.html
- metacpan.org https://metacpan.org/release/OALDERS/HTTP-Daemon-6.17/changes
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.