CVE catalog

CVE-2026-49762

Uncontrolled Resource Consumption vulnerability in the…

[CVE catalog]

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 0.9.3 before 1.20.1.

Severity
Medium · CVSS 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
Source
[NVD] · [CVE record]
EPSS
0.15% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence
Original provider fields
{
  "package_releases": [
    {
      "name": "elixir-lang",
      "status": "fixed",
      "release": "sid",
      "version": "1.20.4+dfsg-1"
    },
    {
      "name": "elixir-lang",
      "status": "fixed",
      "release": "forky",
      "version": "1.20.4+dfsg-1"
    },
    {
      "name": "elixir-lang",
      "status": "vulnerable",
      "release": "trixie",
      "version": "1.18.3.dfsg-1"
    },
    {
      "name": "elixir-lang",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "1.14.0.dfsg-2"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "elixir-lang",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "1.20.1.dfsg-1"
    },
    {
      "bug": null,
      "name": "elixir-lang",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "1.20.1.dfsg-1"
    },
    {
      "bug": null,
      "name": "elixir-lang",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "elixir-lang",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "elixir-lang",
      "ecosystem": "cpe",
      "fixed_version": "not yet fixed"
    }
  ]
}

Publisher notes

[trixie] elixir-lang: Minor issue [bookworm] elixir-lang: Minor issue

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [elixir]Unknown

    Source package: [elixir-lang]

    Details (2)

    • 1.14.0.dfsg-2 · amd64 · bookworm

      Affected

      nvd · elixir-lang · debian · bookworm; nvd · elixir-lang · debian · 12

    • 1.14.0.dfsg-2 · arm64 · bookworm

      Affected

      nvd · elixir-lang · debian · bookworm; nvd · elixir-lang · debian · 12

[Debian 13 (Trixie)]

  • [elixir]Unknown

    Source package: [elixir-lang]

    Details (2)

    • 1.18.3.dfsg-1 · amd64 · trixie

      Affected

      nvd · elixir-lang · debian · 13

    • 1.18.3.dfsg-1 · arm64 · trixie

      Affected

      nvd · elixir-lang · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]