FKIE_CVE-2026-49762
Vulnerability from fkie_nvd - Published: 2026-06-09 14:16 - Updated: 2026-07-23 08:10
Severity
Summary
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"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"
],
"programRoutines": [
{
"name": "\u0027Elixir.Version\u0027:parse/1"
},
{
"name": "\u0027Elixir.Version\u0027:parse!/1"
},
{
"name": "\u0027Elixir.Version\u0027:match?/3"
},
{
"name": "\u0027Elixir.Version\u0027:compare/2"
},
{
"name": "\u0027Elixir.Version\u0027:parse_requirement/1"
},
{
"name": "\u0027Elixir.Version.Parser\u0027:parse_version/2"
},
{
"name": "\u0027Elixir.Version.Parser\u0027:parse_digits/2"
},
{
"name": "\u0027Elixir.Version.Parser\u0027:require_digits/1"
},
{
"name": "\u0027Elixir.Version.Parser\u0027:convert_parts_to_integer/2"
}
],
"repo": "https://github.com/elixir-lang/elixir",
"vendor": "elixir-lang",
"versions": [
{
"lessThan": "1.20.1",
"status": "affected",
"version": "1.5.0",
"versionType": "semver"
}
]
},
{
"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:github/elixir-lang/elixir",
"product": "elixir",
"programFiles": [
"lib/elixir/lib/version.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.Version\u0027:parse/1"
},
{
"name": "\u0027Elixir.Version\u0027:parse!/1"
},
{
"name": "\u0027Elixir.Version\u0027:match?/3"
},
{
"name": "\u0027Elixir.Version\u0027:compare/2"
},
{
"name": "\u0027Elixir.Version\u0027:parse_requirement/1"
},
{
"name": "\u0027Elixir.Version.Parser\u0027:parse_version/2"
},
{
"name": "\u0027Elixir.Version.Parser\u0027:parse_digits/2"
},
{
"name": "\u0027Elixir.Version.Parser\u0027:require_digits/1"
},
{
"name": "\u0027Elixir.Version.Parser\u0027:convert_parts_to_integer/2"
}
],
"repo": "https://github.com/elixir-lang/elixir.git",
"vendor": "elixir-lang",
"versions": [
{
"lessThan": "c64417d72fd5c7d09e963ca3ac5fa2b140978d9e",
"status": "affected",
"version": "63e186aea94395897dc4964d82d250130c01ec25",
"versionType": "git"
}
]
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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.\n\nThe 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.\n\nThis 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.\n\nThis vulnerability is associated with program files lib/version.ex and program routines \u0027Elixir.Version.Parser\u0027:parse_digits/2.\n\nThis issue affects Elixir: from 1.5.0 before 1.20.1."
},
{
"lang": "es",
"value": "Una vulnerabilidad de Consumo de Recursos No Controlado en el m\u00f3dulo Version de la biblioteca est\u00e1ndar de Elixir permite a un atacante que controla una cadena de versi\u00f3n causar una denegaci\u00f3n de servicio a trav\u00e9s del agotamiento de CPU y memoria.\n\nEl analizador de versiones convierte componentes num\u00e9ricos de versi\u00f3n (mayor, menor, parche e identificadores num\u00e9ricos de pre-lanzamiento/construcci\u00f3n) a enteros sin limitar su longitud. Un \u00fanico componente grande de solo d\u00edgitos, por lo tanto, fuerza una conversi\u00f3n superlineal, no productiva, de base-10 a entero de precisi\u00f3n arbitraria (String.to_integer/1, es decir, :erlang.binary_to_integer/1) que fija un planificador BEAM, y un componente m\u00e1s grande genera un SystemLimitError no capturado que bloquea el proceso de llamada. Una \u00fanica cadena de tama\u00f1o moderado (alrededor de un megabyte) es suficiente; no se requiere autenticaci\u00f3n.\n\nEsto es accesible desde los puntos de entrada p\u00fablicos Version.parse/1, Version.parse!/1, Version.match?/3, Version.compare/2, y Version.parse_requirement/1, que las aplicaciones llaman rutinariamente en entradas no confiables como par\u00e1metros HTTP, campos de manifiesto de dependencia y metadatos de paquete.\n\nEsta vulnerabilidad est\u00e1 asociada con los archivos de programa lib/version.ex y las rutinas de programa \u0027Elixir.Version.Parser\u0027:parse_digits/2.\n\nEste problema afecta a Elixir: desde 1.5.0 antes de 1.20.1."
}
],
"id": "CVE-2026-49762",
"lastModified": "2026-07-23T08:10:00.137",
"metrics": {
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-49762",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-09T14:48:56.343391Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-09T14:16:44.317",
"references": [
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://cna.erlef.org/cves/CVE-2026-49762.html"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://github.com/elixir-lang/elixir/commit/c64417d72fd5c7d09e963ca3ac5fa2b140978d9e"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://github.com/elixir-lang/elixir/security/advisories/GHSA-w2h8-8x3g-278p"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-49762"
}
],
"sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
]
}
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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.
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.
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.
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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.
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