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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-49762)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the f778ad20-0d5f-49c4-af45-4493ff0696d9 advisory.

    PJUllrich reports:
    The Version module parses numeric version components without                 length limits. Untrusted input can trigger creation of                 arbitrary-precision integers, causing CPU and memory exhaustion.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 45accfb8-56e4-41b7-8463-572ce643fde0 advisory.

    PJUllrich reports:
    The Version module parses numeric version components without                 length limits. Untrusted input can trigger creation of                 arbitrary-precision integers, causing CPU and memory exhaustion.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
320470	Linux Distros Unpatched Vulnerability : CVE-2026-49762	Nessus	Misc.	Local	medium
320357	FreeBSD : Elixir -- Denial of service via unbounded integer parsing in Version (f778ad20-0d5f-49c4-af45-4493ff0696d9)	Nessus	FreeBSD Local Security Checks	Local	medium
320356	FreeBSD : Elixir -- Denial of service via unbounded integer parsing in Version (45accfb8-56e4-41b7-8463-572ce643fde0)	Nessus	FreeBSD Local Security Checks	Local	medium

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CVE-2026-49762

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