{"id":"CVE-2026-49762","summary":"Unbounded integer parsing in the Version module enables CPU and memory exhaustion denial of service","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.\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.","aliases":["EEF-CVE-2026-49762","GHSA-w2h8-8x3g-278p"],"modified":"2026-07-08T08:06:09.123880154Z","published":"2026-06-09T14:04:07.405Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"63e186aea94395897dc4964d82d250130c01ec25"},{"fixed":"c64417d72fd5c7d09e963ca3ac5fa2b140978d9e"}],"source":"AFFECTED_FIELD"}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49762.json","cwe_ids":["CWE-400"],"cna_assigner":"EEF"},"references":[{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-49762.html"},{"type":"WEB","url":"https://github.com"},{"type":"WEB","url":"https://osv.dev/vulnerability/EEF-CVE-2026-49762"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49762.json"},{"type":"ADVISORY","url":"https://github.com/elixir-lang/elixir/security/advisories/GHSA-w2h8-8x3g-278p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49762"},{"type":"FIX","url":"https://github.com/elixir-lang/elixir/commit/c64417d72fd5c7d09e963ca3ac5fa2b140978d9e"},{"type":"PACKAGE","url":"https://github.com/elixir-lang/elixir"},{"type":"PACKAGE","url":"https://github.com/elixir-lang/elixir.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/elixir-lang/elixir","events":[{"introduced":"117b2bf614d4b74281ff6dfe0e0e95caf50ff100"},{"fixed":"97c1e1ec0cb4e5ab0a56057730229ba482607285"},{"fixed":"c64417d72fd5c7d09e963ca3ac5fa2b140978d9e"}],"database_specific":{"extracted_events":[{"introduced":"1.5.0"},{"fixed":"1.20.1"}],"source":["DESCRIPTION","REFERENCES"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49762.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","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"}]}