CVE-2026-32686 | THREATINT

Home

Description

Uncontrolled Resource Consumption vulnerability in ericmj decimal allows unauthenticated remote Denial of Service. The decimal library does not bound the exponent on parsed input. Storing a decimal with a very large exponent (e.g. Decimal.new(“1e1000000000”)) is accepted without error. Subsequent calls to arithmetic functions (Decimal.add/2, Decimal.sub/2, Decimal.div/2), Decimal.to_string/2 with :normal or :xsd format, Decimal.to_integer/1, Decimal.round/3, or Decimal.compare/3 with a threshold allocate memory proportional to the exponent value, which can exhaust available memory and crash the BEAM VM. Any application that accepts user-supplied decimal input and subsequently performs arithmetic, rounding, conversion to integer, or string formatting on it is exposed. A single malicious request is sufficient to cause an out-of-memory crash. This issue affects decimal: from 0.1.0 before 3.0.0.

PUBLISHED Reserved 2026-03-13 | Published 2026-05-07 | Updated 2026-05-07 | Assigner EEF

MEDIUM: 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-400 Uncontrolled Resource Consumption

Product status

Default status
affected

0.1.0 (semver) before 3.0.0
affected

Default status
affected

bc11f4a2b6fb61fc1360a0ab4e79141bba918841 (git) before 6a523f3a73b8c9974540e21c7aa88f1258bb35ae
affected

Credits

Peter Ullrich finder

Eric Meadows-Jönsson remediation developer

José Valim remediation reviewer

Wojtek Mach remediation reviewer

Jonatan Männchen analyst

ruslandoga remediation reviewer

Matthew Johnston remediation reviewer

References

github.com/…ecimal/security/advisories/GHSA-rhv4-8758-jx7v vendor-advisory related

cna.erlef.org/cves/CVE-2026-32686.html related

osv.dev/vulnerability/EEF-CVE-2026-32686 related

github.com/…ommit/6a523f3a73b8c9974540e21c7aa88f1258bb35ae patch

cve.org (CVE-2026-32686)

nvd.nist.gov (CVE-2026-32686)

Download JSON