{"schemaVersion":3,"id":"CVE-2026-66756","aliases":["UBUNTU-CVE-2026-66756"],"status":"published","duplicateOf":null,"title":null,"description":"Improper Protection of Alternate Path vulnerability in Apache Tika.\n\nThis issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1.\n\nUsers are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue.","dates":{"published":"2026-07-30T19:18:07.900Z","modified":"2026-07-30T19:33:01.657Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","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:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":6.9,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":6.9,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":10,"impact":9.8,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":6.9,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00746,"percentile":0.53989,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.301,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00445},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00746,"percentile":0.53989}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00445,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00746,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00746,"percentile":0.53989}]},"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-424","name":"Improper Protection of Alternate Path","description":"The product does not sufficiently protect all possible paths that a user can take to access restricted functionality or resources.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/424.html"}],"affected":[{"vendor":"apache software foundation","product":"apache tika","name":"Apache Tika","label":"apache tika","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 4.0.0-alpha-1, < 4.0.0-beta-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 4.0.0-alpha-1, < 4.0.0-beta-1","eol":null,"hubHref":"/vendor/apache_software_foundation/apache_tika"},{"vendor":"apache","product":"tika","name":"tika","label":"tika","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"4.0.0:alpha1","noFixRecorded":false,"fixedIn":null},{"text":"4.0.0:beta1-rc1","noFixRecorded":false,"fixedIn":null}],"versionsText":"4.0.0:alpha1 | 4.0.0:beta1-rc1","eol":null,"hubHref":"/vendor/apache/tika"},{"vendor":"ubuntu","product":"tika","name":"tika","label":"tika","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/tika","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://lists.apache.org/thread/ynjg5lxwhqpc83pczf5y5561o2l4o568","label":"lists.apache.org/thread/ynjg5lxwhqpc83pczf5y5561o2l4o568","hostname":"lists.apache.org","tags":["Vendor Advisory","REPORT","Mailing List"]},{"url":"http://www.openwall.com/lists/oss-security/2026/07/30/24","label":"www.openwall.com/lists/oss-security/2026/07/30/24","hostname":"www.openwall.com","tags":["Mailing List","Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-66756","label":"ubuntu.com/security/CVE-2026-66756","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-66756","label":"www.cve.org/CVERecord?id=CVE-2026-66756","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-07-30T19:18:07.900Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-30T19:33:01.657Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T04:04:05.186Z","stale":false,"partial":false}}