{"schemaVersion":3,"id":"CVE-2020-13929","aliases":["GHSA-87p2-cvhq-q4mv"],"status":"published","duplicateOf":null,"title":null,"description":"Authentication bypass vulnerability in Apache Zeppelin allows an attacker to bypass Zeppelin authentication mechanism to act as another user. This issue affects Apache Zeppelin Apache Zeppelin version 0.9.0 and prior versions.","dates":{"published":"2021-09-02T00:00:00.000Z","modified":"2024-08-04T12:32:14.441Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.03258,"percentile":0.88194,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.03258},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.03258,"percentile":0.88194}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.03258,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.03258,"percentile":0.88194}]},"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":[],"affected":[{"vendor":"apache software foundation","product":"apache zeppelin","name":"Apache Zeppelin","label":"apache zeppelin","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ Apache Zeppelin, ≤ 0.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ Apache Zeppelin, ≤ 0.9.0","eol":null,"hubHref":"/vendor/apache_software_foundation/apache_zeppelin"},{"vendor":"apache","product":"zeppelin","name":"zeppelin","label":"zeppelin","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 0.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 0.9.0","eol":null,"hubHref":"/vendor/apache/zeppelin"},{"vendor":"org.apache.zeppelin","product":"zeppelin","name":"org.apache.zeppelin:zeppelin","label":"zeppelin","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.apache.zeppelin/zeppelin","purlType":"maven","versions":[{"text":"< 0.10.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.10.0","eol":null,"hubHref":null}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://lists.apache.org/thread.html/r768800925d6407a6a87ccae0ec98776b7bda50c0e3ed3d0130dad028%40%3Cusers.zeppelin.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB","Mailing List","Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2021/09/02/2","label":"www.openwall.com/lists/oss-security/2021/09/02/2","hostname":"www.openwall.com","tags":["Mailing List","WEB","Third Party Advisory"]},{"url":"https://lists.apache.org/thread.html/r768800925d6407a6a87ccae0ec98776b7bda50c0e3ed3d0130dad028%40%3Cannounce.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","WEB"]},{"url":"https://lists.apache.org/thread.html/r99529e175a7c1c9a26bd41a02802c8af7aa97319fe561874627eb999%40%3Cusers.zeppelin.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","WEB"]},{"url":"https://security.gentoo.org/glsa/202311-04","label":"security.gentoo.org/glsa/202311-04","hostname":"security.gentoo.org","tags":["Vendor Advisory","WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13929","label":"nvd.nist.gov/vuln/detail/CVE-2020-13929","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/apache/zeppelin","label":"github.com/apache/zeppelin","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://lists.apache.org/thread.html/r768800925d6407a6a87ccae0ec98776b7bda50c0e3ed3d0130dad028@%3Cannounce.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r768800925d6407a6a87ccae0ec98776b7bda50c0e3ed3d0130dad028@%3Cusers.zeppelin.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r99529e175a7c1c9a26bd41a02802c8af7aa97319fe561874627eb999@%3Cusers.zeppelin.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-09-02T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T12:32:14.441Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":31,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T03:20:44.077Z","stale":false,"partial":false}}