UBUNTU-CVE-2026-100350 (CVE-2026-100350)
Vulnerability from osv_ubuntu – Published: 2026-10-15 16:17 – Updated: 2026-10-28 17:50 – Source websitekin-openapi is a Go project for handling OpenAPI files. From 0.145.0 until 0.146.0, openapi3filter repeatedly calls regexp.MustCompile for the same parameter-name regular expression inside the per-query-key loop in urlValuesDecoder.DecodeObject used to decode a deepObject query parameter. An unauthenticated remote client can send an affected endpoint a request containing many unrelated query keys, causing ValidateRequest to perform work and allocations proportional to the attacker-controlled key count for every deepObject parameter. The expression itself is fixed and this is not regular expression denial of service; the resource consumption comes from loop-invariant recompilation. This issue is fixed in version 0.146.0.
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-getkin-kin-openapi-dev",
"binary_version": "0.85.0-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "golang-github-getkin-kin-openapi",
"purl": "pkg:deb/ubuntu/golang-github-getkin-kin-openapi@0.85.0-1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.32.0-2",
"0.80.0-1",
"0.85.0-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-getkin-kin-openapi-dev",
"binary_version": "0.123.0-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "golang-github-getkin-kin-openapi",
"purl": "pkg:deb/ubuntu/golang-github-getkin-kin-openapi@0.123.0-1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.117.0-1",
"0.120.0-1",
"0.122.0-3",
"0.123.0-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-getkin-kin-openapi-dev",
"binary_version": "0.135.0-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.10",
"name": "golang-github-getkin-kin-openapi",
"purl": "pkg:deb/ubuntu/golang-github-getkin-kin-openapi@0.135.0-1?arch=source\u0026distro=stonking"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.124.0-1",
"0.135.0-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-getkin-kin-openapi-dev",
"binary_version": "0.124.0-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "golang-github-getkin-kin-openapi",
"purl": "pkg:deb/ubuntu/golang-github-getkin-kin-openapi@0.124.0-1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.124.0-1"
]
}
],
"aliases": [],
"details": "kin-openapi is a Go project for handling OpenAPI files. From 0.145.0 until 0.146.0, openapi3filter repeatedly calls regexp.MustCompile for the same parameter-name regular expression inside the per-query-key loop in urlValuesDecoder.DecodeObject used to decode a deepObject query parameter. An unauthenticated remote client can send an affected endpoint a request containing many unrelated query keys, causing ValidateRequest to perform work and allocations proportional to the attacker-controlled key count for every deepObject parameter. The expression itself is fixed and this is not regular expression denial of service; the resource consumption comes from loop-invariant recompilation. This issue is fixed in version 0.146.0.",
"id": "UBUNTU-CVE-2026-100350",
"modified": "2026-10-28T17:50:26Z",
"published": "2026-10-15T16:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-100350"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-100350"
},
{
"type": "REPORT",
"url": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-h4r5-mxv5-8mjc"
},
{
"type": "REPORT",
"url": "https://github.com/getkin/kin-openapi/commit/d090e36b2f1c42c898ba2a687a8f6e25f5ca727f"
},
{
"type": "REPORT",
"url": "https://github.com/getkin/kin-openapi/commit/d090e36b2f1c42c898ba2a687a8f6e25f5ca727f"
},
{
"type": "REPORT",
"url": "https://github.com/getkin/kin-openapi/releases/tag/v0.146.0"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-100350"
]
}
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