{"affected":[{"ranges":[{"events":[{"introduced":"63e186aea94395897dc4964d82d250130c01ec25"},{"fixed":"c64417d72fd5c7d09e963ca3ac5fa2b140978d9e"}],"repo":"https://github.com/elixir-lang/elixir.git","type":"GIT"}]}],"aliases":["GHSA-w2h8-8x3g-278p","CVE-2026-49762"],"credits":[{"name":"Peter Ullrich","type":"FINDER"},{"name":"José Valim","type":"REMEDIATION_DEVELOPER"},{"name":"Eric Meadows-Jönsson","type":"REMEDIATION_REVIEWER"},{"name":"Jonatan Männchen","type":"ANALYST"}],"database_specific":{"capec_ids":["CAPEC-130"],"cpe_ids":["cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*"],"cwe_ids":["CWE-400"]},"details":"## Summary\n\nUncontrolled 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.\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 'Elixir.Version.Parser':parse\\_digits/2.\n\nThis issue affects Elixir: from 1.5.0 before 1.20.1.","id":"EEF-CVE-2026-49762","modified":"2026-06-09T14:04:07.405Z","published":"2026-06-09T14:04:07.405Z","references":[{"type":"ADVISORY","url":"https://github.com/elixir-lang/elixir/security/advisories/GHSA-w2h8-8x3g-278p"},{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-49762.html"},{"type":"FIX","url":"https://github.com/elixir-lang/elixir/commit/c64417d72fd5c7d09e963ca3ac5fa2b140978d9e"}],"related":[],"schema_version":"1.7.3","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"}],"summary":"Unbounded integer parsing in the Version module enables CPU and memory exhaustion denial of service","upstream":[]}