Improper Validation of Specified Quantity in Input vulnerability in the Elixir standard library's JSON module allows an unauthenticated attacker who supplies a JSON document to cause a denial of service through CPU and memory exhaustion.
JSON.decode/1 and JSON.decode!/1 convert each integer literal with erlang:binary_to_integer/1 and do not bound its length. A literal of one million digits decodes successfully but costs 100 to 300 times as much CPU as a string of the same length, so one request body of a few megabytes holds a scheduler for about a second. A literal of more than about 1.29 million digits raises SystemLimitError. Applications generated by phx.new decode request bodies with JSON in Plug.Parsers, before routing and authentication.
This issue affects elixir: from 1.18.0-rc.0 before 1.18.6, from 1.19.0-rc.0 before 1.19.7, and from 1.20.0-rc.0 before 1.20.5.
CVSS
No CVSS.
References
Configurations
No configuration.
History
30 Oct 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/elixir-lang/elixir/security/advisories/GHSA-rp5q-xqhq-926h - |
30 Oct 2026, 09:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-10-30 09:17
Updated : 2026-10-30 19:39
NVD link : CVE-2026-115274
Mitre link : CVE-2026-115274
CVE.ORG link : CVE-2026-115274
JSON object : View
Products Affected
No product.
CWE
CWE-1284
Improper Validation of Specified Quantity in Input