{"schemaVersion":3,"id":"CVE-2020-13933","aliases":["UBUNTU-CVE-2020-13933","DEBIAN-CVE-2020-13933","GHSA-2vgm-wxr3-6w2j"],"status":"published","duplicateOf":null,"title":null,"description":"Apache Shiro before 1.6.0, when using Apache Shiro, a specially crafted HTTP request may cause an authentication bypass.","dates":{"published":"2020-08-17T20:19:53.000Z","modified":"2024-08-04T12:32:14.332Z","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:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":10,"impact":6,"computed":true},{"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:H/I:N/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:H/I:N/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:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.44411,"percentile":0.98749,"severity":"high","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.44411},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.44411,"percentile":0.98749}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.44411,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.44411,"percentile":0.98749}]},"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","product":"shiro","name":"Shiro","label":"shiro","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.6.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.6.0","eol":null,"hubHref":"/vendor/apache/shiro"},{"vendor":"debian","product":"shiro","name":"shiro","label":"shiro","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/shiro","purlType":"deb","versions":[{"text":"< 1.3.2-5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.3.2-5","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"shiro","name":"shiro","label":"shiro","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/shiro","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 1.3.2-3ubuntu0.18.04.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 1.3.2-4ubuntu0.2","noFixRecorded":false,"fixedIn":null},{"text":"< 1.3.2-5","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 1.3.2-3ubuntu0.18.04.1~esm1 | < 1.3.2-4ubuntu0.2 | < 1.3.2-5","eol":null,"hubHref":null},{"vendor":"debian","product":"debian_linux","name":"debian linux","label":"debian_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"9.0","eol":{"isEol":true,"eolDate":"2022-07-01T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"9","label":"9 (Stretch)","eolFrom":"2022-07-01T00:00:00.000Z","isLts":false,"isMaintained":true,"latestVersion":"9.13"},"product":{"name":"debian","label":"Debian","category":"os"}},"hubHref":"/vendor/debian/debian_linux"},{"vendor":"org.apache.shiro","product":"shiro-core","name":"org.apache.shiro:shiro-core","label":"shiro-core","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.apache.shiro/shiro-core","purlType":"maven","versions":[{"text":"< 1.6.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.6.0","eol":null,"hubHref":null}],"affectedCount":5,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://lists.apache.org/thread.html/r539f87706094e79c5da0826030384373f0041068936912876856835f%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["X Refsource MISC","REPORT","WEB","Mailing List","Vendor Advisory"]},{"url":"https://lists.apache.org/thread.html/r18b45d560d76c4260813c802771cc9678aa651fb8340e09366bfa198%40%3Cdev.geode.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r9ea6d8560d6354d41433ad006069904f0ed083527aa348b5999261a7%40%3Cdev.geode.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r6ea0224c1971a91dc6ade1f22508119a9c3bd56cef656f0c44bbfabb%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r4c1e1249e9e1acb868db0c80728c13f448d07333da06a0f1603c0a33%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r8097b81905f2a113ebdf925bcbc6d8c9d6863c807c9ee42e1e7c9293%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/rb5edf49cd1451475dbcf53826ba6ef1bb7872dd6493d6112eb0c2bad%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r4506cedc401d6b8de83787f8436aac83956e411d66848c84785db46d%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r70098e336d02047ce4d4e69293fe8d558cd68cde06f6430398959bc4%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/rb47d88af224e396ee34ffb88ee99fb6d04510de5722cf14b7137e6bc%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r575301804bfac87a064359cf4b4ae9d514f2d10db7d44120765f4129%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r70b907ccb306e9391145e2b10f56cc6914a245f91720a17a486c020a%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r9d93dfb5df016b1a71a808486bc8f9fbafebbdbc8533625f91253f1d%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/re25b8317b00a50272a7252c4552cf1a81a97984cc2111ef7728e48e0%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.apache.org/thread.html/r852971e28f54cafa7d325bd7033115c67d613b112a2a1076817390ac%40%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["Mailing List","X Refsource MLIST"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/08/msg00002.html","label":"lists.debian.org/debian-lts-announce/2021/08/msg00002.html","hostname":"lists.debian.org","tags":["Mailing List","X Refsource MLIST","WEB","Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-13933","label":"ubuntu.com/security/CVE-2020-13933","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-6352-1","label":"ubuntu.com/security/notices/USN-6352-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-13933","label":"www.cve.org/CVERecord?id=CVE-2020-13933","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-13933","label":"security-tracker.debian.org/tracker/CVE-2020-13933","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13933","label":"nvd.nist.gov/vuln/detail/CVE-2020-13933","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://lists.apache.org/thread.html/re25b8317b00a50272a7252c4552cf1a81a97984cc2111ef7728e48e0@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/rb5edf49cd1451475dbcf53826ba6ef1bb7872dd6493d6112eb0c2bad@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/rb47d88af224e396ee34ffb88ee99fb6d04510de5722cf14b7137e6bc@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r9ea6d8560d6354d41433ad006069904f0ed083527aa348b5999261a7@%3Cdev.geode.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r9d93dfb5df016b1a71a808486bc8f9fbafebbdbc8533625f91253f1d@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r852971e28f54cafa7d325bd7033115c67d613b112a2a1076817390ac@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r8097b81905f2a113ebdf925bcbc6d8c9d6863c807c9ee42e1e7c9293@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r70b907ccb306e9391145e2b10f56cc6914a245f91720a17a486c020a@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r70098e336d02047ce4d4e69293fe8d558cd68cde06f6430398959bc4@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r6ea0224c1971a91dc6ade1f22508119a9c3bd56cef656f0c44bbfabb@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r575301804bfac87a064359cf4b4ae9d514f2d10db7d44120765f4129@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r4c1e1249e9e1acb868db0c80728c13f448d07333da06a0f1603c0a33@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r4506cedc401d6b8de83787f8436aac83956e411d66848c84785db46d@%3Cdev.shiro.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r18b45d560d76c4260813c802771cc9678aa651fb8340e09366bfa198@%3Cdev.geode.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["WEB"]},{"url":"https://github.com/apache/shiro","label":"github.com/apache/shiro","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":["DLA-2726-1","USN-6352-1"],"duplicates":[],"related":["USN-6352-1"]},"timeline":[{"kind":"published","date":"2020-08-17T20:19:53.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T12:32:14.332Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":39,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T03:51:07.310Z","stale":false,"partial":false}}