Vulnerability-Lookup

RHSA-2026:36189

Vulnerability from csaf_redhat - Published: 2026-07-07 09:54 - Updated: 2026-07-07 11:34

Summary

Red Hat Security Advisory: perl-HTTP-Daemon security update

Severity

Important

Notes

Topic: An update for perl-HTTP-Daemon is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-8450

A flaw was found in HTTP::Daemon, a Perl module used for creating HTTP servers. A remote attacker can exploit this vulnerability by providing specially crafted input to the `send_file()` function, leading to OS command injection. This allows the attacker to execute arbitrary commands on the system with the privileges of the daemon process, potentially resulting in full system compromise or data manipulation.

8.1 (High)


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

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected products

Fixed 2 products

Product	Identifier	Version	Remediation
Unresolved product id: CRB-10.2.Z:perl-HTTP-Daemon-0:6.16-7.el10_2.1.noarch		—	Vendor Fix fix
Unresolved product id: CRB-10.2.Z:perl-HTTP-Daemon-0:6.16-7.el10_2.1.src		—	Vendor Fix fix

Threats

Impact Important

References

11 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:36189	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2481773	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-8450	self
https://bugzilla.redhat.com/show_bug.cgi?id=2481773	external
https://www.cve.org/CVERecord?id=CVE-2026-8450	external
https://nvd.nist.gov/vuln/detail/CVE-2026-8450	external
https://github.com/libwww-perl/HTTP-Daemon/commit…	external
https://github.com/libwww-perl/HTTP-Daemon/pull/89	external
https://metacpan.org/release/OALDERS/HTTP-Daemon-…	external

JSON

To clipboard

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

Vulnerability from cvelistv5 – Published: 2026-05-27 04:22 – Updated: 2026-07-07 12:04

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 (v2.0.3)

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

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 CodeReady Linux Builder (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux CRB (v. 8)	cpe:/a:redhat:enterprise_linux:8::crb
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)	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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          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:36187"
          }
        ],
        "solutions": [
          {
            "lang": "en",
            "value": "RHSA-2026:36189: Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:36188: Red Hat Enterprise Linux CRB (v. 8)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:36187: Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-05-27T05:00:58.395Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-05-27T04:22:26.539Z",
            "value": "Made public."
          }
        ],
        "title": "perl-HTTP-Daemon: HTTP::Daemon: Arbitrary code execution via OS command injection in send_file()",
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "HTTP-Daemon",
          "product": "HTTP::Daemon",
          "programFiles": [
            "lib/HTTP/Daemon.pm"
          ],
          "programRoutines": [
            {
              "name": "HTTP::Daemon::ClientConn::send_file"
            }
          ],
          "repo": "https://github.com/libwww-perl/HTTP-Daemon",
          "vendor": "OALDERS",
          "versions": [
            {
              "lessThan": "6.17",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file().\n\nsend_file() opens its string argument with Perl\u0027s 2-arg open(). The 2-arg form interprets magic prefixes: \u0027| cmd\u0027 and \u0027cmd |\u0027 open a pipe to a subprocess, \u0027\u003e path\u0027 and \u0027\u003e\u003e path\u0027 open the path for write or append.\n\nUntrusted input passed to send_file() can run OS commands at the daemon process UID. The read-pipe form (\u0027cmd |\u0027) also leaks subprocess stdout into the HTTP response body. The write-mode forms can create or truncate files at attacker chosen paths."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-73",
              "description": "CWE-73 External Control of File Name or Path",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T04:22:26.539Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/libwww-perl/HTTP-Daemon/pull/89"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/libwww-perl/HTTP-Daemon/commit/945d35141d94490f749640bd4390acd6a2193995.patch"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/OALDERS/HTTP-Daemon-6.17/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to HTTP-Daemon 6.17 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-12T00:00:00.000Z",
          "value": "Issue identified."
        },
        {
          "lang": "en",
          "time": "2026-05-19T00:00:00.000Z",
          "value": "HTTP-Daemon 6.17 released."
        }
      ],
      "title": "HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file()",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-8450",
    "datePublished": "2026-05-27T04:22:26.539Z",
    "dateReserved": "2026-05-12T21:26:04.212Z",
    "dateUpdated": "2026-07-07T12:04:46.594Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2026:36189

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

Tags

Sightings

Nomenclature