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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| elixir-lang | elixir | unaffected |
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| elixir-lang | elixir | unaffected |
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Elixir-lang
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Elixir
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Solution
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Workaround
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Tue, 09 Jun 2026 15:30:00 +0000
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| Metrics |
ssvc
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Tue, 09 Jun 2026 14:15:00 +0000
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| 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 1.5.0 before 1.20.1. | |
| Title | Unbounded integer parsing in the Version module enables CPU and memory exhaustion denial of service | |
| First Time appeared |
Elixir-lang
Elixir-lang elixir |
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| Weaknesses | CWE-400 | |
| CPEs | cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Elixir-lang
Elixir-lang elixir |
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| References |
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| Metrics |
cvssV4_0
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Projects
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MITRE
Status: PUBLISHED
Assigner: EEF
Published:
Updated: 2026-06-09T14:49:07.338Z
Reserved: 2026-06-01T13:45:22.449Z
Link: CVE-2026-49762
Vulnrichment
Updated: 2026-06-09T14:49:00.483Z
NVD
Status : Deferred
Published: 2026-06-09T14:16:44.317
Modified: 2026-06-09T14:47:47.457
Link: CVE-2026-49762
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-06-09T20:20:35Z