PT-2026-47801 · Elixir · Elixir

Eric Meadows-Jönsson + 3 · Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-49762

Positive Technologies (AI Summary)

CVSS v4.0

5.1

Medium

Base vector

AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Elixir versions 1.5.0 through 1.20.0

Description Uncontrolled Resource Consumption in the standard library's Version module allows an attacker to cause a denial of service via CPU and memory exhaustion. The version parser converts numeric components to integers without bounding their length, forcing a super-linear, non-yielding base-10 to arbitrary-precision integer conversion through String.to integer/1 (also known as :erlang.binary to integer/1). This process pins a BEAM scheduler, and larger components can trigger an uncaught SystemLimitError that crashes the calling process. A string of approximately one megabyte is sufficient to trigger this issue, and no authentication is required. The issue is reachable via the parse digits/2 routine in lib/version.ex and public entry points including Version.parse/1, Version.parse!/1, Version.match?/3, Version.compare/2, and Version.parse requirement/1.

Recommendations Update to version 1.20.1.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2026-49762

Affected Products

Elixir

References · 5

• https://github.com/elixir-lang/elixir/security/advisories/GHSA-w2h8-8x3g-278p · Vendor Advisory
• https://github.com/elixir-lang/elixir/commit/c64417d72fd5c7d09e963ca3ac5fa2b140978d9e · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-49762 · Security Note
• https://osv.dev/vulnerability/EEF-CVE-2026-49762 · Vendor Advisory
• https://cna.erlef.org/cves/CVE-2026-49762.html · Note