Vulnerability-Lookup

GHSA-3HC6-3P33-WQ57

Vulnerability from github – Published: 2026-05-27 06:31 – Updated: 2026-05-27 06:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-8450"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-73"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T05:16:23Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-3hc6-3p33-wq57",
  "modified": "2026-05-27T06:31:34Z",
  "published": "2026-05-27T06:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8450"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libwww-perl/HTTP-Daemon/pull/89"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libwww-perl/HTTP-Daemon/commit/945d35141d94490f749640bd4390acd6a2193995.patch"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/OALDERS/HTTP-Daemon-6.17/changes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-05-27 04:22 – Updated: 2026-05-27 07:24

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

No CVSS data available.

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

3 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

Impacted products

1 product

Vendor	Product	Version
OALDERS	HTTP::Daemon	Affected: 0 , < 6.17 (custom)

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JSON

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{
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    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-05-27T07:24:59.662Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/05/27/5"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "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"
            }
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          "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."
        }
      ],
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          "descriptions": [
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              "type": "CWE"
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        {
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              "lang": "en",
              "type": "CWE"
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        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
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          "tags": [
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          "url": "https://github.com/libwww-perl/HTTP-Daemon/pull/89"
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          "url": "https://github.com/libwww-perl/HTTP-Daemon/commit/945d35141d94490f749640bd4390acd6a2193995.patch"
        },
        {
          "tags": [
            "release-notes"
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          "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()",
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  "cveMetadata": {
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    "assignerShortName": "CPANSec",
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    "datePublished": "2026-05-27T04:22:26.539Z",
    "dateReserved": "2026-05-12T21:26:04.212Z",
    "dateUpdated": "2026-05-27T07:24:59.662Z",
    "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

GHSA-3HC6-3P33-WQ57

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

Tags

Sightings

Nomenclature