{"id":"UBUNTU-CVE-2026-100350","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.","modified":"2026-10-17T12:58:41.237416364Z","published":"2026-10-16T00:00:00Z","upstream":["CVE-2026-100350"],"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"}],"affected":[{"package":{"name":"golang-github-getkin-kin-openapi","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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":"0.85.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100350.json"}},{"package":{"name":"golang-github-getkin-kin-openapi","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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":"0.123.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100350.json"}},{"package":{"name":"golang-github-getkin-kin-openapi","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.124.0-1","0.135.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-getkin-kin-openapi-dev","binary_version":"0.135.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100350.json"}},{"package":{"name":"golang-github-getkin-kin-openapi","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/golang-github-getkin-kin-openapi?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.124.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-getkin-kin-openapi-dev","binary_version":"0.124.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100350.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}