High
Security advisory
actionpack/lib/action_dispatch/http/mime_type.rb in Action Pack in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 does not properly restrict use of the MIME type cache, which allows remote attackers to cause a denial of service (memory consumption) via a crafted HTTP Accept header.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-0751
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:02 UTC · Revision 1
Source evidence
actionpack/lib/action_dispatch/http/mime_type.rb in Action Pack in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 does not properly restrict use of the MIME type cache, which allows remote attackers to cause a denial of service (memory consumption) via a crafted HTTP Accept header.
osv:CVE-2016-0751
Complete source record
{
"id": "29f6a095953a58097cd23e0efc453b2a6d66e9d90ef7e52177eb01dc2c2e573c",
"url": "https://osv.dev/vulnerability/CVE-2016-0751",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-0751",
"summary": "actionpack/lib/action_dispatch/http/mime_type.rb in Action Pack in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 does not properly restrict use of the MIME type cache, which allows remote attackers to cause a denial of service (memory consumption) via a crafted HTTP Accept header.",
"evidence": "osv:CVE-2016-0751",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-0751",
"aliases": [
"CVE-2016-0751",
"GHSA-ffpv-c4hm-3x6v"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/rails/rails",
"type": "GIT",
"events": [
{
"introduced": "375d9a0a7fb329b0fbbd75a13e93e53a00520587"
},
{
"last_affected": "099ddfdefd44fda11d0f6a72f934f8a0ee83141b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0-NA"
},
{
"last_affected": "4.0.0-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.0:beta:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0-beta"
},
{
"last_affected": "4.0.0-beta"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0-rc1"
},
{
"last_affected": "4.0.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0-rc2"
},
{
"last_affected": "4.0.0-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.1:-:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.1-NA"
},
{
"last_affected": "4.0.1-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.1:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.1-rc1"
},
{
"last_affected": "4.0.1-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.1:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.1-rc2"
},
{
"last_affected": "4.0.1-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.1:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.1-rc3"
},
{
"last_affected": "4.0.1-rc3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.1:rc4:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.1-rc4"
},
{
"last_affected": "4.0.1-rc4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.2"
},
{
"last_affected": "4.0.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.3"
},
{
"last_affected": "4.0.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.4"
},
{
"last_affected": "4.0.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.5"
},
{
"last_affected": "4.0.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.6:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.6"
},
{
"last_affected": "4.0.6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.6:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.6-rc1"
},
{
"last_affected": "4.0.6-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.6:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.6-rc2"
},
{
"last_affected": "4.0.6-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.6:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.6-rc3"
},
{
"last_affected": "4.0.6-rc3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.7:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.7"
},
{
"last_affected": "4.0.7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.8:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.8"
},
{
"last_affected": "4.0.8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.9:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.9"
},
{
"last_affected": "4.0.9"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.10:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.10"
},
{
"last_affected": "4.0.10"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.0.10:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.10-rc1"
},
{
"last_affected": "4.0.10-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.0-NA"
},
{
"last_affected": "4.1.0-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.0:beta1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.0-beta1"
},
{
"last_affected": "4.1.0-beta1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.1"
},
{
"last_affected": "4.1.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.2"
},
{
"last_affected": "4.1.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.2:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.2-rc1"
},
{
"last_affected": "4.1.2-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.2:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.2-rc2"
},
{
"last_affected": "4.1.2-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.2:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.2-rc3"
},
{
"last_affected": "4.1.2-rc3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.3"
},
{
"last_affected": "4.1.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.4"
},
{
"last_affected": "4.1.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.5"
},
{
"last_affected": "4.1.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.6:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.6-rc1"
},
{
"last_affected": "4.1.6-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.7:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.7"
},
{
"last_affected": "4.1.7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.8:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.8"
},
{
"last_affected": "4.1.8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.9:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.9"
},
{
"last_affected": "4.1.9"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.10:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.10"
},
{
"last_affected": "4.1.10"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.12:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.12"
},
{
"last_affected": "4.1.12"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.1.13:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.13"
},
{
"last_affected": "4.1.13"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.0:beta1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-beta1"
},
{
"last_affected": "4.2.0-beta1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.0:beta2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-beta2"
},
{
"last_affected": "4.2.0-beta2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.0:beta3:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-beta3"
},
{
"last_affected": "4.2.0-beta3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.0:beta4:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-beta4"
},
{
"last_affected": "4.2.0-beta4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-rc1"
},
{
"last_affected": "4.2.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-rc2"
},
{
"last_affected": "4.2.0-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.0:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-rc3"
},
{
"last_affected": "4.2.0-rc3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.1"
},
{
"last_affected": "4.2.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.1:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.1-rc1"
},
{
"last_affected": "4.2.1-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.1:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.1-rc2"
},
{
"last_affected": "4.2.1-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.1:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.1-rc3"
},
{
"last_affected": "4.2.1-rc3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.1:rc4:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.1-rc4"
},
{
"last_affected": "4.2.1-rc4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.2"
},
{
"last_affected": "4.2.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.3"
},
{
"last_affected": "4.2.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.3:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.3-rc1"
},
{
"last_affected": "4.2.3-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.4"
},
{
"last_affected": "4.2.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.4:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.4-rc1"
},
{
"last_affected": "4.2.4-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.5"
},
{
"last_affected": "4.2.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.5:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.5-rc1"
},
{
"last_affected": "4.2.5-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:4.2.5:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.5-rc2"
},
{
"last_affected": "4.2.5-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:rubyonrails:rails:5.0.0:beta1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.0.0-beta1"
},
{
"last_affected": "5.0.0-beta1"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"4.0.0-NA",
"4.0.0-beta",
"4.0.0-rc1",
"4.0.0-rc2",
"4.0.1-NA",
"4.0.1-rc1",
"4.0.1-rc2",
"4.0.1-rc3",
"4.0.1-rc4",
"4.0.10",
"4.0.10-rc1",
"4.0.2",
"4.0.3",
"4.0.4",
"4.0.5",
"4.0.6",
"4.0.6-rc1",
"4.0.6-rc2",
"4.0.6-rc3",
"4.0.7",
"4.0.8",
"4.0.9",
"4.1.0-NA",
"4.1.0-beta1",
"4.1.1",
"4.1.10",
"4.1.12",
"4.1.13",
"4.1.2",
"4.1.2-rc1",
"4.1.2-rc2",
"4.1.2-rc3",
"4.1.3",
"4.1.4",
"4.1.5",
"4.1.6-rc1",
"4.1.7",
"4.1.8",
"4.1.9",
"4.2.0-beta1",
"4.2.0-beta2",
"4.2.0-beta3",
"4.2.0-beta4",
"4.2.0-rc1",
"4.2.0-rc2",
"4.2.0-rc3",
"4.2.1",
"4.2.1-rc1",
"4.2.1-rc2",
"4.2.1-rc3",
"4.2.1-rc4",
"4.2.2",
"4.2.3",
"4.2.3-rc1",
"4.2.4",
"4.2.4-rc1",
"4.2.5",
"4.2.5-rc1",
"4.2.5-rc2",
"5.0.0-beta1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-0751.json"
}
}
],
"modified": "2026-10-24T10:31:01.977430660Z",
"provider": "osv",
"references": [
"https://groups.google.com/forum/message/raw?msg=ruby-security-ann/9oLY_FCzvoc/5CDXbvpYEgAJ"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:rubyonrails:ruby_on_rails:*:*:*:*:*:*:*:*"
],
"vendor_product": "rubyonrails:ruby_on_rails",
"extracted_events": [
{
"range": [
{
"last_affected": "3.2.22"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.10:rc2:*:*:*:*:*:*",
"cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.11.1:*:*:*:*:*:*:*",
"cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.11:*:*:*:*:*:*:*",
"cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.12:*:*:*:*:*:*:*",
"cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.13:*:*:*:*:*:*:*",
"cpe:2.3:a:rubyonrails:ruby_on_rails:4.0.13:rc1:*:*:*:*:*:*",
"cpe:2.3:a:rubyonrails:ruby_on_rails:4.1.11:*:*:*:*:*:*:*"
],
"vendor_product": "rubyonrails:ruby_on_rails",
"extracted_events": [
{
"range": [
{
"introduced": "4.0.10-rc2"
},
{
"last_affected": "4.0.10-rc2"
},
{
"introduced": "4.0.11"
},
{
"last_affected": "4.0.11"
},
{
"introduced": "4.0.11.1"
},
{
"last_affected": "4.0.11.1"
},
{
"introduced": "4.0.12"
},
{
"last_affected": "4.0.12"
},
{
"introduced": "4.0.13"
},
{
"last_affected": "4.0.13"
},
{
"introduced": "4.0.13-rc1"
},
{
"last_affected": "4.0.13-rc1"
},
{
"introduced": "4.1.11"
},
{
"last_affected": "4.1.11"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-0751",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 439914,
"published_at": "2016-02-16T02:59:05.877+00:00"
}