ruby-advisory-db/gems/activesupport/CVE-2026-33176.yml at 03c7702be716a958a2e0b095e08c2ab0736cd55e · rubysec/ruby-advisory-db · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
---
gem: activesupport
framework: rails
cve: 2026-33176
ghsa: 2j26-frm8-cmj9
url: https://github.com/rails/rails/security/advisories/GHSA-2j26-frm8-cmj9
title: Rails Active Support has a possible DoS vulnerability in its number helpers
date: 2026-03-23
description: |
  ### Impact
  Active Support number helpers accept strings containing scientific notation (e.g. `1e10000`),
  which when converted to a string could be expanded into extremely large decimal representations.
  This can cause excessive memory allocation and CPU consumption when the expanded number is formatted,
  possibly resulting in a DoS vulnerability.

  ### Releases
  The fixed releases are available at the normal locations.
patched_versions:
  - "~> 7.2.3, >= 7.2.3.1"
  - "~> 8.0.4, >= 8.0.4.1"
  - ">= 8.1.2.1"
related:
  url:
    - https://github.com/rails/rails/security/advisories/GHSA-2j26-frm8-cmj9
    - https://github.com/rails/rails/commit/19dbab51ca086a657bb86458042bc44314916bcb
    - https://github.com/rails/rails/commit/ebd6be18120d1136511eb516338e27af25ac0a1a
    - https://github.com/rails/rails/commit/ee2c59e730e5b8faed502cd2c573109df093f856
    - https://github.com/rails/rails/releases/tag/v7.2.3.1
    - https://github.com/rails/rails/releases/tag/v8.0.4.1
    - https://github.com/rails/rails/releases/tag/v8.1.2.1
    - https://github.com/advisories/GHSA-2j26-frm8-cmj9