MediumFix available
rails — security advisory
Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. `NumberToDelimitedConverter` uses a lookahead-based regular expression with `gsub!` to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between the repeated lookahead group and `gsub!` can produce quadratic time complexity on long digit strings. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
- Products
- rails
- Affected versions
- 2:6.1.7.10+dfsg-1~deb12u1, 2:6.1.7.10+dfsg-1~deb12u2, 2:6.1.7.3+dfsg-1, 2:6.1.7.3+dfsg-10, 2:6.1.7.3+dfsg-11, 2:6.1.7.3+dfsg-12, 2:6.1.7.3+dfsg-13, 2:6.1.7.3+dfsg-2, 2:6.1.7.3+dfsg-2~deb12u1, 2:6.1.7.3+dfsg-3, 2:6.1.7.3+dfsg-4, 2:6.1.7.3+dfsg-5, 2:6.1.7.3+dfsg-6, 2:6.1.7.3+dfsg-7, 2:6.1.7.3+dfsg-7~exp1, 2:6.1.7.3+dfsg-8, 2:6.1.7.3+dfsg-9, 2:7.2.2.1+dfsg-7, 2:7.2.2.2+dfsg-1, 2:7.2.2.2+dfsg-2, 2:7.2.2.2+dfsg-2~deb13u1, 2:7.2.2.2+dfsg-2~deb13u2, 2:7.2.3+dfsg-1, 2:7.2.3+dfsg-2, 2:7.2.3+dfsg-3
- Fixed versions
- 2:6.1.7.10+dfsg-1~deb12u3, 2:7.2.2.2+dfsg-2~deb13u2, 2:7.2.3.1+dfsg-1
- CVEs
- CVE-2026-33169
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 10:03 UTC · Revision 1
Source evidence
Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. `NumberToDelimitedConverter` uses a lookahead-based regular expression with `gsub!` to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between the repeated lookahead group and `gsub!` can produce quadratic time complexity on long digit strings. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
osv:DEBIAN-CVE-2026-33169
rails
Fixed versions: 2:6.1.7.10+dfsg-1~deb12u3
rails
Fixed versions: 2:7.2.2.2+dfsg-2~deb13u2
rails
Fixed versions: 2:7.2.3.1+dfsg-1
Complete source record
{
"id": "749935b2c003e233e95aabf180401eba4957fd16930d62171d16d01f6a0933f1",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-33169",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-33169",
"summary": "Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. `NumberToDelimitedConverter` uses a lookahead-based regular expression with `gsub!` to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between the repeated lookahead group and `gsub!` can produce quadratic time complexity on long digit strings. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.",
"evidence": "osv:DEBIAN-CVE-2026-33169",
"products": [
{
"name": {
"value": "rails",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:6.1.7.10+dfsg-1~deb12u3",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "2:6.1.7.10+dfsg-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.10+dfsg-1~deb12u2",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-10",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-11",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-12",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-13",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-2~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-3",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-4",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-5",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-6",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-7",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-7~exp1",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-8",
"evidence": "/affected/0/versions"
},
{
"value": "2:6.1.7.3+dfsg-9",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "rails",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:7.2.2.2+dfsg-2~deb13u2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "2:7.2.2.1+dfsg-7",
"evidence": "/affected/1/versions"
},
{
"value": "2:7.2.2.2+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "2:7.2.2.2+dfsg-2~deb13u1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "rails",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:7.2.3.1+dfsg-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "2:7.2.2.1+dfsg-7",
"evidence": "/affected/2/versions"
},
{
"value": "2:7.2.2.2+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "2:7.2.2.2+dfsg-2",
"evidence": "/affected/2/versions"
},
{
"value": "2:7.2.2.2+dfsg-2~deb13u1",
"evidence": "/affected/2/versions"
},
{
"value": "2:7.2.2.2+dfsg-2~deb13u2",
"evidence": "/affected/2/versions"
},
{
"value": "2:7.2.3+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "2:7.2.3+dfsg-2",
"evidence": "/affected/2/versions"
},
{
"value": "2:7.2.3+dfsg-3",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-33169",
"aliases": [
"DEBIAN-CVE-2026-33169"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:6.1.7.10+dfsg-1~deb12u3"
}
]
}
],
"package": {
"name": "rails",
"purl": "pkg:deb/debian/rails?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2:6.1.7.10+dfsg-1~deb12u1",
"2:6.1.7.10+dfsg-1~deb12u2",
"2:6.1.7.3+dfsg-1",
"2:6.1.7.3+dfsg-10",
"2:6.1.7.3+dfsg-11",
"2:6.1.7.3+dfsg-12",
"2:6.1.7.3+dfsg-13",
"2:6.1.7.3+dfsg-2",
"2:6.1.7.3+dfsg-2~deb12u1",
"2:6.1.7.3+dfsg-3",
"2:6.1.7.3+dfsg-4",
"2:6.1.7.3+dfsg-5",
"2:6.1.7.3+dfsg-6",
"2:6.1.7.3+dfsg-7",
"2:6.1.7.3+dfsg-7~exp1",
"2:6.1.7.3+dfsg-8",
"2:6.1.7.3+dfsg-9"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33169.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:7.2.2.2+dfsg-2~deb13u2"
}
]
}
],
"package": {
"name": "rails",
"purl": "pkg:deb/debian/rails?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2:7.2.2.1+dfsg-7",
"2:7.2.2.2+dfsg-1",
"2:7.2.2.2+dfsg-2~deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33169.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:7.2.3.1+dfsg-1"
}
]
}
],
"package": {
"name": "rails",
"purl": "pkg:deb/debian/rails?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2:7.2.2.1+dfsg-7",
"2:7.2.2.2+dfsg-1",
"2:7.2.2.2+dfsg-2",
"2:7.2.2.2+dfsg-2~deb13u1",
"2:7.2.2.2+dfsg-2~deb13u2",
"2:7.2.3+dfsg-1",
"2:7.2.3+dfsg-2",
"2:7.2.3+dfsg-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33169.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-08T18:00:07.100493698Z",
"provider": "osv",
"upstream": [
"CVE-2026-33169"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-33169"
]
},
"related_cves": [
{
"value": "CVE-2026-33169",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 104422,
"published_at": "2026-03-24T00:16:28.113+00:00"
}