Vulnerability-Lookup

UBUNTU-CVE-2026-49762 (CVE-2026-49762)

Vulnerability from osv_ubuntu – Published: 2026-06-09 14:16 – Updated: 2026-06-09 14:16 – Source website

Details

Uncontrolled Resource Consumption vulnerability in the Elixir standard library's Version module allows an attacker who controls a version string to cause a denial of service through CPU and memory exhaustion. The version parser converts numeric version components (major, minor, patch and numeric pre-release/build identifiers) to integers without bounding their length. A single large all-digit component therefore forces a super-linear, non-yielding base-10 to arbitrary-precision integer conversion (String.to_integer/1, i.e. :erlang.binary_to_integer/1) that pins a BEAM scheduler, and a larger component raises an uncaught SystemLimitError that crashes the calling process. A single moderately sized string (around one megabyte) is enough; no authentication is required. This is reachable from the public entry points Version.parse/1, Version.parse!/1, Version.match?/3, Version.compare/2, and Version.parse_requirement/1, which applications routinely call on untrusted input such as HTTP parameters, dependency-manifest fields, and package metadata. This vulnerability is associated with program files lib/version.ex and program routines 'Elixir.Version.Parser':parse_digits/2. This issue affects Elixir: from 1.5.0 before 1.20.1.

Severity

5.1 (Medium)


                    
                      CVSS:4.0/AV:L/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

URL

Type

	https://ubuntu.com/security/CVE-2026-49762	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-49762	REPORT
	https://github.com/elixir-lang/elixir/security/ad…	REPORT
	https://cna.erlef.org/cves/CVE-2026-49762.html	REPORT
	https://osv.dev/vulnerability/EEF-CVE-2026-49762	REPORT
	https://github.com/elixir-lang/elixir/commit/c644…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "elixir",
            "binary_version": "1.1.0~0.20150708-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "elixir-lang",
        "purl": "pkg:deb/ubuntu/elixir-lang@1.1.0~0.20150708-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.0~0.20150708-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "elixir",
            "binary_version": "1.3.3-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "elixir-lang",
        "purl": "pkg:deb/ubuntu/elixir-lang@1.3.3-2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.3-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "elixir",
            "binary_version": "1.9.1.dfsg-1.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "elixir-lang",
        "purl": "pkg:deb/ubuntu/elixir-lang@1.9.1.dfsg-1.3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.9.1.dfsg-1",
        "1.9.1.dfsg-1.3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "elixir",
            "binary_version": "1.12.2.dfsg-2.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "elixir-lang",
        "purl": "pkg:deb/ubuntu/elixir-lang@1.12.2.dfsg-2.2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.10.3.dfsg-1.1",
        "1.12.2.dfsg-2.1",
        "1.12.2.dfsg-2.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "elixir",
            "binary_version": "1.14.0.dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "elixir-lang",
        "purl": "pkg:deb/ubuntu/elixir-lang@1.14.0.dfsg-2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.14.0.dfsg-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "elixir",
            "binary_version": "1.18.3.dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "elixir-lang",
        "purl": "pkg:deb/ubuntu/elixir-lang@1.18.3.dfsg-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.18.1.dfsg-1.1",
        "1.18.3.dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "elixir",
            "binary_version": "1.18.3.dfsg-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "elixir-lang",
        "purl": "pkg:deb/ubuntu/elixir-lang@1.18.3.dfsg-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.18.3.dfsg-1",
        "1.18.3.dfsg-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Uncontrolled Resource Consumption vulnerability in the Elixir standard library\u0027s Version module allows an attacker who controls a version string to cause a denial of service through CPU and memory exhaustion. The version parser converts numeric version components (major, minor, patch and numeric pre-release/build identifiers) to integers without bounding their length. A single large all-digit component therefore forces a super-linear, non-yielding base-10 to arbitrary-precision integer conversion (String.to_integer/1, i.e. :erlang.binary_to_integer/1) that pins a BEAM scheduler, and a larger component raises an uncaught SystemLimitError that crashes the calling process. A single moderately sized string (around one megabyte) is enough; no authentication is required. This is reachable from the public entry points Version.parse/1, Version.parse!/1, Version.match?/3, Version.compare/2, and Version.parse_requirement/1, which applications routinely call on untrusted input such as HTTP parameters, dependency-manifest fields, and package metadata. This vulnerability is associated with program files lib/version.ex and program routines \u0027Elixir.Version.Parser\u0027:parse_digits/2. This issue affects Elixir: from 1.5.0 before 1.20.1.",
  "id": "UBUNTU-CVE-2026-49762",
  "modified": "2026-06-09T14:16:00Z",
  "published": "2026-06-09T14:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-49762"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-49762"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/elixir-lang/elixir/security/advisories/GHSA-w2h8-8x3g-278p"
    },
    {
      "type": "REPORT",
      "url": "https://cna.erlef.org/cves/CVE-2026-49762.html"
    },
    {
      "type": "REPORT",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-49762"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/elixir-lang/elixir/commit/c64417d72fd5c7d09e963ca3ac5fa2b140978d9e"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/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-2026-49762"
  ]
}

CVE-2026-49762 (GCVE-0-2026-49762)

Vulnerability from cvelistv5 – Published: 2026-06-09 14:04 – Updated: 2026-06-10 04:43

Title

Unbounded integer parsing in the Version module enables CPU and memory exhaustion denial of service

Summary

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-09 14:48 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

EEF mitre root

References

4 references

URL	Tags
https://github.com/elixir-lang/elixir/security/ad…	vendor-advisoryrelated
https://cna.erlef.org/cves/CVE-2026-49762.html	related
https://osv.dev/vulnerability/EEF-CVE-2026-49762	related
https://github.com/elixir-lang/elixir/commit/c644…	patch

Impacted products

2 products

Vendor	Product	Version
elixir-lang	elixir	Affected: 1.5.0 , < 1.20.1 (semver) cpe:2.3:a:elixir-lang:elixir::::::::
elixir-lang	elixir	Affected: 63e186aea94395897dc4964d82d250130c01ec25 , < c64417d72fd5c7d09e963ca3ac5fa2b140978d9e (git) cpe:2.3:a:elixir-lang:elixir::::::::

Credits

Peter Ullrich José Valim Eric Meadows-Jönsson Jonatan Männchen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-49762",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-09T14:48:56.343391Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2026-06-09T14:49:07.338Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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      }
    ],
    "cna": {
      "affected": [
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          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Version\u0027",
            "\u0027Elixir.Version.Parser\u0027"
          ],
          "packageName": "elixir-lang/elixir",
          "packageURL": "pkg:otp/elixir?repository_url=https:%2F%2Fgithub.com%2Felixir-lang%2Felixir\u0026vcs_url=git%20https:%2F%2Fgithub.com%2Felixir-lang%2Felixir.git",
          "product": "elixir",
          "programFiles": [
            "lib/version.ex"
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              "name": "\u0027Elixir.Version\u0027:parse/1"
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            {
              "name": "\u0027Elixir.Version\u0027:parse!/1"
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          "versions": [
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              "value": "\u003cp\u003eUncontrolled Resource Consumption vulnerability in the Elixir standard library\u0027s \u003ctt\u003eVersion\u003c/tt\u003e module allows an attacker who controls a version string to cause a denial of service through CPU and memory exhaustion.\u003c/p\u003e\u003cp\u003eThe version parser converts numeric version components (major, minor, patch and numeric pre-release/build identifiers) to integers without bounding their length. A single large all-digit component therefore forces a super-linear, non-yielding base-10 to arbitrary-precision integer conversion (\u003ctt\u003eString.to_integer/1\u003c/tt\u003e, i.e. \u003ctt\u003e:erlang.binary_to_integer/1\u003c/tt\u003e) that pins a BEAM scheduler, and a larger component raises an uncaught \u003ctt\u003eSystemLimitError\u003c/tt\u003e that crashes the calling process. A single moderately sized string (around one megabyte) is enough; no authentication is required.\u003c/p\u003e\u003cp\u003eThis is reachable from the public entry points \u003ctt\u003eVersion.parse/1\u003c/tt\u003e, \u003ctt\u003eVersion.parse!/1\u003c/tt\u003e, \u003ctt\u003eVersion.match?/3\u003c/tt\u003e, \u003ctt\u003eVersion.compare/2\u003c/tt\u003e, and \u003ctt\u003eVersion.parse_requirement/1\u003c/tt\u003e, which applications routinely call on untrusted input such as HTTP parameters, dependency-manifest fields, and package metadata.\u003c/p\u003e\u003cp\u003eThis vulnerability is associated with program files \u003ctt\u003elib/version.ex\u003c/tt\u003e and program routines \u003ctt\u003e\u0027Elixir.Version.Parser\u0027:parse_digits/2\u003c/tt\u003e.\u003c/p\u003e\u003cp\u003eThis issue affects Elixir: from 1.5.0 before 1.20.1.\u003c/p\u003e"
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        {
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            "privilegesRequired": "NONE",
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            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
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      "providerMetadata": {
        "dateUpdated": "2026-06-10T04:43:08.517Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
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      "references": [
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        },
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          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-49762.html"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-49762"
        },
        {
          "tags": [
            "patch"
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          "url": "https://github.com/elixir-lang/elixir/commit/c64417d72fd5c7d09e963ca3ac5fa2b140978d9e"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Unbounded integer parsing in the Version module enables CPU and memory exhaustion denial of service",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-49762",
    "datePublished": "2026-06-09T14:04:07.405Z",
    "dateReserved": "2026-06-01T13:45:22.449Z",
    "dateUpdated": "2026-06-10T04:43:08.517Z",
    "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.

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

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.