ericmj decimal 0.1.0/3.1.1 Decimal.round places allocation of resources

Summaryinfo

A vulnerability was found in ericmj decimal 0.1.0/3.1.1. It has been classified as problematic. Impacted is the function Decimal.round. The manipulation of the argument places leads to allocation of resources. This vulnerability is uniquely identified as CVE-2026-97853. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in ericmj decimal 0.1.0/3.1.1. It has been rated as problematic. This issue affects the function Decimal.round. The manipulation of the argument places with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

Memory Allocation with Excessive Size Value vulnerability in ericmj decimal allows Denial of Service. Decimal.round/3 builds the full result for the requested number of decimal places before the context precision (34 digits by default) is applied, so its cost grows with the places argument instead of with the size of the result. For positive places it appends places zero digits to the coefficient as a charlist before converting it to an integer, and for negative places it builds a charlist of -places zero digits. A single call such as Decimal.round(Decimal.new("1.5"), -50_000_000) allocates about 5.5 GB of memory, which can exhaust available memory and get the BEAM VM killed. The oldest releases instead loop once per decimal place, consuming CPU in proportion to places. Any application that passes a user-supplied number of decimal places or scale to Decimal.round/2 or Decimal.round/3 without bounding it is exposed. The input limits added for CVE-2026-32686 do not cover the places argument. This issue affects decimal: from 0.1.0 before 3.1.2.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-97853 since 10/09/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 3.1.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-96426). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• ericmj

Name

• decimal

Version

• 0.1.0
• 3.1.1

Website

• Product: https://github.com/ericmj/decimal/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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