CVE-2026-115864

Full vulnerability record from the local CVENow database.

Description

Monoceros versions before 0.30 for Perl allow a request declaring a large Content-Length to kill a worker by exhausting memory. The request body is read in a loop that asks sysread for all of the remaining declared length at once. Perl grows the read buffer to that size before any data arrives, so a length larger than available memory makes the worker exit with an uncatchable out of memory error before the application is called. A remote attacker can force a worker restart with each request of a few bytes.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

9b29abf9-4ab0-4765-b253-1875cd9b441e

Published

2026-11-09 22:18:28.247000

Last modified

2026-11-10 01:17:15.747000

View original CVE JSON

{
  "id": "CVE-2026-115864",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-11-09T22:18:28.247",
  "lastModified": "2026-11-10T01:17:15.747",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Monoceros versions before 0.30 for Perl allow a request declaring a large Content-Length to kill a worker by exhausting memory.\n\nThe request body is read in a loop that asks sysread for all of the remaining declared length at once. Perl grows the read buffer to that size before any data arrives, so a length larger than available memory makes the worker exit with an uncatchable out of memory error before the application is called.\n\nA remote attacker can force a worker restart with each request of a few bytes."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "Monoceros",
          "modules": [
            "Monoceros"
          ],
          "programFiles": [
            "lib/Monoceros/Server.pm"
          ],
          "programRoutines": [
            {
              "name": "Monoceros::Server::handle_connection"
            }
          ],
          "repo": "https://github.com/kazeburo/Monoceros",
          "packageURL": "pkg:cpan/Monoceros",
          "versions": [
            {
              "version": "0",
              "lessThan": "0.30",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-789"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/kazeburo/Monoceros/commit/897a4a9624329fc0a4b2352d387bdac6d37848e2.patch",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/KAZEBURO/Monoceros-0.30/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/11/09/32",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}