{"id":"UBUNTU-CVE-2026-49762","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. 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.","modified":"2026-06-12T09:04:20.867212174Z","published":"2026-06-09T14:16:00Z","upstream":["CVE-2026-49762"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-49762"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-49762"},{"type":"REPORT","url":"https://github.com/elixir-lang/elixir/security/advisories/GHSA-w2h8-8x3g-278p"},{"type":"REPORT","url":"https://cna.erlef.org/cves/CVE-2026-49762.html"},{"type":"REPORT","url":"https://osv.dev/vulnerability/EEF-CVE-2026-49762"},{"type":"REPORT","url":"https://github.com/elixir-lang/elixir/commit/c64417d72fd5c7d09e963ca3ac5fa2b140978d9e"}],"affected":[{"package":{"name":"elixir-lang","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/elixir-lang?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0~0.20150708-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.1.0~0.20150708-1","binary_name":"elixir"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49762.json"}},{"package":{"name":"elixir-lang","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/elixir-lang?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.3-2"],"ecosystem_specific":{"binaries":[{"binary_name":"elixir","binary_version":"1.3.3-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49762.json"}},{"package":{"name":"elixir-lang","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/elixir-lang?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.1.dfsg-1","1.9.1.dfsg-1.3"],"ecosystem_specific":{"binaries":[{"binary_name":"elixir","binary_version":"1.9.1.dfsg-1.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49762.json"}},{"package":{"name":"elixir-lang","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/elixir-lang?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.3.dfsg-1.1","1.12.2.dfsg-2.1","1.12.2.dfsg-2.2"],"ecosystem_specific":{"binaries":[{"binary_name":"elixir","binary_version":"1.12.2.dfsg-2.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49762.json"}},{"package":{"name":"elixir-lang","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/elixir-lang?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.14.0.dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.14.0.dfsg-2","binary_name":"elixir"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49762.json"}},{"package":{"name":"elixir-lang","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/elixir-lang?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.18.1.dfsg-1.1","1.18.3.dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.18.3.dfsg-1","binary_name":"elixir"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49762.json"}},{"package":{"name":"elixir-lang","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/elixir-lang?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.18.3.dfsg-1","1.18.3.dfsg-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"elixir","binary_version":"1.18.3.dfsg-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-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"},{"type":"Ubuntu","score":"medium"}]}