Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-8450

9.1 · CRITICAL

HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file().

Published May 27, 2026CWE-73EPSS 2.61%

Overview

CVE-2026-8450 is a critical-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/libwww-perl/HTTP-Daemon/commit/945d35141d94490f749640bd4390acd6a2193995.patchGitHubgithub.com/libwww-perl/HTTP-Daemon/pull/89Refmetacpan.org/release/OALDERS/HTTP-Daemon-6.17/changesRefwww.openwall.com/lists/oss-security/2026/05/27/5Reflists.debian.org/debian-lts-announce/2026/06/msg00028.htmlRefaccess.redhat.com/errata/RHSA-2026:36187Refaccess.redhat.com/errata/RHSA-2026:36188Refaccess.redhat.com/errata/RHSA-2026:36189Refaccess.redhat.com/security/cve/CVE-2026-8450Refbugzilla.redhat.com/show_bug.cgi?id=2481773

How CyberStrike helps

Frequently asked questions

What is CVE-2026-8450?

CVE-2026-8450 is a critical-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-8450?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-8450?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-8450?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-8450 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related CRITICAL CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999