UBUNTU-CVE-2026-115274 (CVE-2026-115274)

Vulnerability from osv_ubuntu – Published: 2026-10-30 00:00 – Updated: 2026-10-30 00:00 – Source website
VLAI
Details

Improper Validation of Specified Quantity in Input vulnerability in the Elixir standard library's JSON module allows an unauthenticated attacker who supplies a JSON document to cause a denial of service through CPU and memory exhaustion. JSON.decode/1 and JSON.decode!/1 convert each integer literal with erlang:binary_to_integer/1 and do not bound its length. A literal of one million digits decodes successfully but costs 100 to 300 times as much CPU as a string of the same length, so one request body of a few megabytes holds a scheduler for about a second. A literal of more than about 1.29 million digits raises SystemLimitError. Applications generated by phx.new decode request bodies with JSON in Plug.Parsers, before routing and authentication. This issue affects elixir: from 1.18.0-rc.0 before 1.18.6, from 1.19.0-rc.0 before 1.19.7, and from 1.20.0-rc.0 before 1.20.5.

Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-elixir",
            "binary_version": "0.7.1-4build0.14.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "elixir",
        "purl": "pkg:deb/ubuntu/elixir@0.7.1-4build0.14.04.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.1-1",
        "0.7.1-2",
        "0.7.1-4build0.14.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-elixir",
            "binary_version": "0.7.1-4build0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "elixir",
        "purl": "pkg:deb/ubuntu/elixir@0.7.1-4build0.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.1-3",
        "0.7.1-4build0.16.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-elixir",
            "binary_version": "0.7.1-4build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "elixir",
        "purl": "pkg:deb/ubuntu/elixir@0.7.1-4build1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.1-4build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Improper Validation of Specified Quantity in Input vulnerability in the Elixir standard library\u0027s JSON module allows an unauthenticated attacker who supplies a JSON document to cause a denial of service through CPU and memory exhaustion. JSON.decode/1 and JSON.decode!/1 convert each integer literal with erlang:binary_to_integer/1 and do not bound its length. A literal of one million digits decodes successfully but costs 100 to 300 times as much CPU as a string of the same length, so one request body of a few megabytes holds a scheduler for about a second. A literal of more than about 1.29 million digits raises SystemLimitError. Applications generated by phx.new decode request bodies with JSON in Plug.Parsers, before routing and authentication. This issue affects elixir: from 1.18.0-rc.0 before 1.18.6, from 1.19.0-rc.0 before 1.19.7, and from 1.20.0-rc.0 before 1.20.5.",
  "id": "UBUNTU-CVE-2026-115274",
  "modified": "2026-10-30T00:00:00Z",
  "published": "2026-10-30T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-115274"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-115274"
    },
    {
      "type": "REPORT",
      "url": "https://cna.erlef.org/cves/CVE-2026-115274.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/elixir-lang/elixir/commit/7154e8781da9fd016a973ea01776a011c8b5726a"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/elixir-lang/elixir/commit/793c1147210388587defb649f25f293ffbfa6b1b"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/elixir-lang/elixir/commit/c81f12265919c34a0d5134f1905a4eb4edaea1c2"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/elixir-lang/elixir/commit/cd158efacdc10b30232864251747dff9b8387dfe"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/elixir-lang/elixir/commit/ee5cc23f8928aa5a0f25bb7f28e42ecfc7b7d396"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/elixir-lang/elixir/security/advisories/GHSA-rp5q-xqhq-926h"
    },
    {
      "type": "REPORT",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-115274"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-115274"
  ]
}



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