GHSA-2J26-FRM8-CMJ9
Vulnerability from github – Published: 2026-03-23 21:15 – Updated: 2026-04-07 22:12
VLAI?
Summary
Rails Active Support has a possible DoS vulnerability in its number helpers
Details
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.
Credit
https://hackerone.com/manun
Severity ?
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "activesupport"
},
"ranges": [
{
"events": [
{
"introduced": "8.1.0.beta1"
},
{
"fixed": "8.1.2.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "RubyGems",
"name": "activesupport"
},
"ranges": [
{
"events": [
{
"introduced": "8.0.0.beta1"
},
{
"fixed": "8.0.4.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "RubyGems",
"name": "activesupport"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "7.2.3.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-33176"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-23T21:15:16Z",
"nvd_published_at": "2026-03-24T00:16:28Z",
"severity": "MODERATE"
},
"details": "### Impact\nActive 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.\n\n### Releases\nThe fixed releases are available at the normal locations.\n\n### Credit\n\nhttps://hackerone.com/manun",
"id": "GHSA-2j26-frm8-cmj9",
"modified": "2026-04-07T22:12:32Z",
"published": "2026-03-23T21:15:16Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/rails/rails/security/advisories/GHSA-2j26-frm8-cmj9"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33176"
},
{
"type": "WEB",
"url": "https://github.com/rails/rails/commit/19dbab51ca086a657bb86458042bc44314916bcb"
},
{
"type": "WEB",
"url": "https://github.com/rails/rails/commit/ebd6be18120d1136511eb516338e27af25ac0a1a"
},
{
"type": "WEB",
"url": "https://github.com/rails/rails/commit/ee2c59e730e5b8faed502cd2c573109df093f856"
},
{
"type": "PACKAGE",
"url": "https://github.com/rails/rails"
},
{
"type": "WEB",
"url": "https://github.com/rails/rails/releases/tag/v7.2.3.1"
},
{
"type": "WEB",
"url": "https://github.com/rails/rails/releases/tag/v8.0.4.1"
},
{
"type": "WEB",
"url": "https://github.com/rails/rails/releases/tag/v8.1.2.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
}
],
"summary": "Rails Active Support has a possible DoS vulnerability in its number helpers"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…