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CVE PROGRAM SOURCE RECORD5.1 Medium

CVE-2026-49762

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

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Status
Published
Published
Updated
Assigning organization
EEF

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

elixir-lang elixir

Default version status: unaffected

  • 0.9.3 to < 1.20.1affected
pkg:otp/elixir?repository_url=https:%2F%2Fgithub.com%2Felixir-lang%2Felixir&vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Felixir-lang%2Felixir.git

elixir-lang elixir

Default version status: unaffected

  • 057691722eb8cfe315f5606358954a2b173ff7a3 to < *affected
pkg:github/elixir-lang/elixir

References