ubuntu-cve-2026-49762
Vulnerability from osv_ubuntu
Published
2026-06-09 14:16
Modified
2026-06-09 14:16
Summary
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
N/A (UNKNOWN)
References
{
"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"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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