CVE-2026-49762 (GCVE-0-2026-49762)

Vulnerability from cvelistv5 – Published: 2026-06-09 14:04 – Updated: 2026-06-10 04:43
VLAI
Title
Unbounded integer parsing in the Version module enables CPU and memory exhaustion denial of service
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
EEF
Impacted products
Vendor Product Version
elixir-lang elixir Affected: 1.5.0 , < 1.20.1 (semver)
    cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*
Create a notification for this product.
elixir-lang elixir Affected: 63e186aea94395897dc4964d82d250130c01ec25 , < c64417d72fd5c7d09e963ca3ac5fa2b140978d9e (git)
    cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Peter Ullrich José Valim Eric Meadows-Jönsson Jonatan Männchen
Show details on NVD website

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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:43:12+00:00",
      "cve": "CVE-2026-49762",
      "id": "CVE-2026-49762",
      "initial_release_date": "2026-06-09T14:04:07.405000+00:00",
      "product_status:known_affected": "3",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "elixir: Elixir Version module: Denial of Service via uncontrolled resource consumption with crafted version string",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49762.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-06-10T02:25:21Z",
      "cve": "CVE-2026-49762",
      "id": "CVE-2026-49762",
      "initial_release_date": "2026-06-10T02:25:21Z",
      "product_status:known_affected": "1",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-49762",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-49762.json",
      "version": "2"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-49762\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-09T14:48:56.343391Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-09T14:49:00.483Z\"}}], \"cna\": {\"title\": \"Unbounded integer parsing in the Version module enables CPU and memory exhaustion denial of service\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Peter Ullrich\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Jos\\u00e9 Valim\"}, {\"lang\": \"en\", \"type\": \"remediation reviewer\", \"value\": \"Eric Meadows-J\\u00f6nsson\"}, {\"lang\": \"en\", \"type\": \"analyst\", \"value\": \"Jonatan M\\u00e4nnchen\"}], \"impacts\": [{\"capecId\": \"CAPEC-130\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-130 Excessive Allocation\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 5.1, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"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\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"LOW\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/elixir-lang/elixir\", \"vendor\": \"elixir-lang\", \"modules\": [\"\u0027Elixir.Version\u0027\", \"\u0027Elixir.Version.Parser\u0027\"], \"product\": \"elixir\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.5.0\", \"lessThan\": \"1.20.1\", \"versionType\": \"semver\"}], \"packageURL\": \"pkg:otp/elixir?repository_url=https:%2F%2Fgithub.com%2Felixir-lang%2Felixir\u0026vcs_url=git%20https:%2F%2Fgithub.com%2Felixir-lang%2Felixir.git\", \"packageName\": \"elixir-lang/elixir\", \"programFiles\": [\"lib/version.ex\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"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\"}]}, {\"cpes\": [\"cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/elixir-lang/elixir.git\", \"vendor\": \"elixir-lang\", \"modules\": [\"\u0027Elixir.Version\u0027\", \"\u0027Elixir.Version.Parser\u0027\"], \"product\": \"elixir\", \"versions\": [{\"status\": \"affected\", \"version\": \"63e186aea94395897dc4964d82d250130c01ec25\", \"lessThan\": \"c64417d72fd5c7d09e963ca3ac5fa2b140978d9e\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/elixir-lang/elixir\", \"packageName\": \"elixir-lang/elixir\", \"programFiles\": [\"lib/elixir/lib/version.ex\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"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\"}]}], \"references\": [{\"url\": \"https://github.com/elixir-lang/elixir/security/advisories/GHSA-w2h8-8x3g-278p\", \"tags\": [\"vendor-advisory\", \"related\"]}, {\"url\": \"https://cna.erlef.org/cves/CVE-2026-49762.html\", \"tags\": [\"related\"]}, {\"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-49762\", \"tags\": [\"related\"]}, {\"url\": \"https://github.com/elixir-lang/elixir/commit/c64417d72fd5c7d09e963ca3ac5fa2b140978d9e\", \"tags\": [\"patch\"]}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"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.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eUncontrolled Resource Consumption vulnerability in the Elixir standard library\u0027s \u003ctt\u003eVersion\u003c/tt\u003e module allows an attacker who controls a version string to cause a denial of service through CPU and memory exhaustion.\u003c/p\u003e\u003cp\u003eThe 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 (\u003ctt\u003eString.to_integer/1\u003c/tt\u003e, i.e. \u003ctt\u003e:erlang.binary_to_integer/1\u003c/tt\u003e) that pins a BEAM scheduler, and a larger component raises an uncaught \u003ctt\u003eSystemLimitError\u003c/tt\u003e that crashes the calling process. A single moderately sized string (around one megabyte) is enough; no authentication is required.\u003c/p\u003e\u003cp\u003eThis is reachable from the public entry points \u003ctt\u003eVersion.parse/1\u003c/tt\u003e, \u003ctt\u003eVersion.parse!/1\u003c/tt\u003e, \u003ctt\u003eVersion.match?/3\u003c/tt\u003e, \u003ctt\u003eVersion.compare/2\u003c/tt\u003e, and \u003ctt\u003eVersion.parse_requirement/1\u003c/tt\u003e, which applications routinely call on untrusted input such as HTTP parameters, dependency-manifest fields, and package metadata.\u003c/p\u003e\u003cp\u003eThis vulnerability is associated with program files \u003ctt\u003elib/version.ex\u003c/tt\u003e and program routines \u003ctt\u003e\u0027Elixir.Version.Parser\u0027:parse_digits/2\u003c/tt\u003e.\u003c/p\u003e\u003cp\u003eThis issue affects Elixir: from 1.5.0 before 1.20.1.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400 Uncontrolled Resource Consumption\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"1.20.1\", \"versionStartIncluding\": \"1.5.0\"}], \"operator\": \"AND\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-06-10T04:43:08.517Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-49762\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-10T04:43:08.517Z\", \"dateReserved\": \"2026-06-01T13:45:22.449Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-06-09T14:04:07.405Z\", \"assignerShortName\": \"EEF\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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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Detection rules are retrieved from Rulezet.

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