{"schemaVersion":3,"id":"CVE-2026-100350","aliases":["GHSA-h4r5-mxv5-8mjc","UBUNTU-CVE-2026-100350"],"status":"published","duplicateOf":null,"title":null,"description":"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.","dates":{"published":"2026-10-15T15:37:19.077Z","modified":"2026-10-15T18:32:57.402Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":10,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":10,"impact":2.3,"computed":true}]},"epss":{"probability":0.00451,"percentile":0.37849,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-16T00:00:00.000Z","score":0.00451,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00451,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00451,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00451,"percentile":0.37849}],"last30":[{"date":"2026-10-16T00:00:00.000Z","score":0.00451,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00451,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00451,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00451,"percentile":0.37849}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption","description":"The product does not properly control the allocation and maintenance of a limited resource.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/400.html"},{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling","description":"The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/770.html"},{"id":"CWE-1050","name":"Excessive Platform Resource Consumption within a Loop","description":"The product has a loop body or loop condition that contains a control element that directly or\n\t\t\t\t\tindirectly consumes platform resources, e.g. messaging, sessions, locks, or file\n\t\t\t\t\tdescriptors.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/1050.html"}],"affected":[{"vendor":"ubuntu","product":"golang-github-getkin-kin-openapi","name":"golang-github-getkin-kin-openapi","label":"golang-github-getkin-kin-openapi","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/golang-github-getkin-kin-openapi","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"getkin","product":"kin-openapi","name":"kin-openapi","label":"kin-openapi","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 0.145.0, < 0.146.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.145.0, < 0.146.0","eol":null,"hubHref":"/vendor/getkin/kin-openapi"},{"vendor":"github.com/getkin","product":"kin-openapi","name":"github.com/getkin/kin-openapi","label":"kin-openapi","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/getkin/kin-openapi","purlType":"golang","versions":[{"text":"≥ 0.145.0, < 0.146.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.145.0, < 0.146.0","eol":null,"hubHref":null}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/getkin/kin-openapi/security/advisories/GHSA-h4r5-mxv5-8mjc","label":"github.com/getkin/kin-openapi/security/advisories/GHSA-h4r5-mxv5-8mjc","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","REPORT"]},{"url":"https://github.com/getkin/kin-openapi/commit/d090e36b2f1c42c898ba2a687a8f6e25f5ca727f","label":"github.com/getkin/kin-openapi/commit/d090e36b2f1c42c898ba2a687a8f6e25f5ca727f","hostname":"github.com","tags":["X Refsource MISC","WEB","REPORT"]},{"url":"https://github.com/getkin/kin-openapi/releases/tag/v0.146.0","label":"github.com/getkin/kin-openapi/releases/tag/v0.146.0","hostname":"github.com","tags":["X Refsource MISC","WEB","REPORT"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100350","label":"nvd.nist.gov/vuln/detail/CVE-2026-100350","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/getkin/kin-openapi","label":"github.com/getkin/kin-openapi","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://ubuntu.com/security/CVE-2026-100350","label":"ubuntu.com/security/CVE-2026-100350","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100350","label":"www.cve.org/CVERecord?id=CVE-2026-100350","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":["CVE-2026-61801","OPENSUSE-SU-2026:12164-1","RHSA-2026:82637"],"duplicates":[],"related":["OPENSUSE-SU-2026:12164-1"]},"timeline":[{"kind":"published","date":"2026-10-15T15:37:19.077Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-15T18:32:57.402Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":21,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T06:26:51.073Z","stale":false,"partial":false}}