{"schemaVersion":3,"id":"CVE-2021-22051","aliases":["GHSA-2r2v-q399-qq93"],"status":"published","duplicateOf":null,"title":null,"description":"Applications using Spring Cloud Gateway are vulnerable to specifically crafted requests that could make an extra request on downstream services. Users of affected versions should apply the following mitigation: 3.0.x users should upgrade to 3.0.5+, 2.2.x users should upgrade to 2.2.10.RELEASE or newer.","dates":{"published":"2021-11-08T13:37:29.000Z","modified":"2024-08-03T18:30:23.942Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Maven","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4,"severity":"medium","vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0069,"percentile":0.5194,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.0069},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0069,"percentile":0.5194}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0069,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0069,"percentile":0.5194}]},"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-863","name":"Incorrect Authorization","description":"The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/863.html"}],"affected":[{"vendor":"org.springframework.cloud","product":"spring-cloud-gateway","name":"org.springframework.cloud:spring-cloud-gateway","label":"spring-cloud-gateway","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.springframework.cloud/spring-cloud-gateway","purlType":"maven","versions":[{"text":"≥ 3.0.0, < 3.0.5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2.2.0, < 2.2.10.RELEASE0.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 3.0.0, < 3.0.5 | ≥ 2.2.0, < 2.2.10.RELEASE0.5","eol":{"isEol":null,"eolDate":null,"matchMethod":"purl","cycle":null,"product":{"name":"spring-cloud","label":"Spring Cloud","category":"framework"}},"hubHref":null},{"vendor":"vmware","product":"spring_cloud_gateway","name":"Spring Cloud Gateway","label":"spring_cloud_gateway","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2.2.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 3.0.0, < 3.0.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.2.10 | ≥ 3.0.0, < 3.0.5","eol":null,"hubHref":"/vendor/vmware/spring_cloud_gateway"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://tanzu.vmware.com/security/cve-2021-22051","label":"tanzu.vmware.com/security/cve-2021-22051","hostname":"tanzu.vmware.com","tags":["X Refsource MISC","WEB","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22051","label":"nvd.nist.gov/vuln/detail/CVE-2021-22051","hostname":"nvd.nist.gov","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-11-08T13:37:29.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-03T18:30:23.942Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T07:30:32.721Z","stale":false,"partial":false}}