Vulnerability-Lookup

ALSA-2026:36187

Vulnerability from osv_almalinux – Published: 2026-07-07 00:00 – Updated: 2026-07-08 11:47 – Source website

Summary

Important: perl-HTTP-Daemon security update

Details

The perl-HTTP-Daemon package includes the HTTP::Daemon class, a subclass of IO::Socket::IP. Instances of the HTTP::Daemon class are HTTP/1.1 servers that listen on a socket for incoming requests.

Security Fix(es):

perl-HTTP-Daemon: HTTP::Daemon: Arbitrary code execution via OS command injection in send_file() (CVE-2026-8450)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:36187	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-8450	REPORT
	https://bugzilla.redhat.com/2481773	REPORT
	https://errata.almalinux.org/9/ALSA-2026-36187.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "perl-HTTP-Daemon"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12-6.el9_8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The perl-HTTP-Daemon package includes the [HTTP::Daemon](HTTP::Daemon) class, a subclass of IO::Socket::IP. Instances of the [HTTP::Daemon](HTTP::Daemon) class are HTTP/1.1 servers that listen on a socket for incoming requests.  \n\nSecurity Fix(es):  \n\n  * perl-HTTP-Daemon: [HTTP::Daemon:](HTTP::Daemon:) Arbitrary code execution via OS command injection in send_file() (CVE-2026-8450)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:36187",
  "modified": "2026-07-08T11:47:24Z",
  "published": "2026-07-07T00:00:00Z",
  "references": [
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      "url": "https://access.redhat.com/errata/RHSA-2026:36187"
    },
    {
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    },
    {
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      "url": "https://bugzilla.redhat.com/2481773"
    },
    {
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      "url": "https://errata.almalinux.org/9/ALSA-2026-36187.html"
    }
  ],
  "related": [
    "CVE-2026-8450"
  ],
  "summary": "Important: perl-HTTP-Daemon security update"
}

CVE-2026-8450 (GCVE-0-2026-8450)

Vulnerability from cvelistv5 – Published: 2026-05-27 04:22 – Updated: 2026-07-15 00:39

Title

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

Summary

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.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-27 15:46 UTC

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-73 - External Control of File Name or Path

Assigner

CPANSec redhat root

References

11 references

URL	Tags
https://github.com/libwww-perl/HTTP-Daemon/pull/89	issue-tracking
https://github.com/libwww-perl/HTTP-Daemon/commit…	patch
https://metacpan.org/release/OALDERS/HTTP-Daemon-…	release-notes
http://www.openwall.com/lists/oss-security/2026/05/27/5
https://lists.debian.org/debian-lts-announce/2026…
https://access.redhat.com/security/cve/CVE-2026-8450	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2481773	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:36189	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36188	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36187	vendor-advisoryx_refsource_REDHAT

Impacted products

5 products

Vendor	Product	Version
OALDERS	HTTP::Daemon	Affected: 0 , < 6.17 (custom)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:6.16-7.el10_2.1 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:6.01-24.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::crb
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:6.12-6.el9_8.1 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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Action not permitted

ALSA-2026:36187

CVE-2026-8450 (GCVE-0-2026-8450)

Tags

Sightings

Nomenclature

Related by attack behaviour