{"schemaVersion":3,"id":"CVE-2026-44598","aliases":["UBUNTU-CVE-2026-44598","GHSA-wpqm-4gwx-w843"],"status":"published","duplicateOf":null,"title":null,"description":"With valid login credentials, URL Redirection to Untrusted Site ('Open Redirect'), Server-Side Request Forgery (SSRF) vulnerability in Apache Shiro.\n\n\n\n\nThis issue affects Apache Shiro from 2.0-alpha to 2.1.0, and 3.0.0-alpha-1, only when using shiro-jakarta-ee integration module.\n\nUsers are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue by encrypting the cookie.\n\nAfter successful login, Jakarta EE integration module uses shiroSavedRequest cookie to redirect to a particular web page after login.\nThis cookie was not validated, and can be forged to send a HTTP GET request from the server itself to an arbitrary URL from the cookie.","dates":{"published":"2026-05-25T20:19:44.317Z","modified":"2026-05-26T12:38:12.217Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.4,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":5.1,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/AU:Y/R:A/V:D/RE:L/U:Green","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":5.1,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/AU:Y/R:A/V:D/RE:L/U:Green","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","exploitability":5.9,"impact":4.5,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Maven","score":5.1,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/AU:Y/R:A/V:D/RE:L/U:Green","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":5.1,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/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:N/AU:Y/R:A/V:D/RE:L/U:Green","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00493,"percentile":0.40991,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0.12600000000000003,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.00367},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00493,"percentile":0.40991}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00493,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00493,"percentile":0.40991}]},"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-601","name":"URL Redirection to Untrusted Site ('Open Redirect')","description":"The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Low","url":"https://cwe.mitre.org/data/definitions/601.html"},{"id":"CWE-918","name":"Server-Side Request Forgery (SSRF)","description":"The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/918.html"}],"affected":[{"vendor":"apache software foundation","product":"apache shiro jakarta ee module","name":"Apache Shiro Jakarta EE module","label":"apache shiro jakarta ee module","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2.0.0-alpha-0, ≤ 2.1.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 3.0.0-alpha-0, ≤ 3.0.0-alpha-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.0.0-alpha-0, ≤ 2.1.0 | ≥ 3.0.0-alpha-0, ≤ 3.0.0-alpha-1","eol":null,"hubHref":"/vendor/apache_software_foundation/apache_shiro_jakarta_ee_module"},{"vendor":"apache","product":"shiro","name":"Shiro","label":"shiro","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2.0.0, < 2.1.1","noFixRecorded":false,"fixedIn":null},{"text":"3.0.0:alpha1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.0.0, < 2.1.1 | 3.0.0:alpha1","eol":null,"hubHref":"/vendor/apache/shiro"},{"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}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"org.apache.shiro","product":"shiro-jakarta-ee","name":"org.apache.shiro:shiro-jakarta-ee","label":"shiro-jakarta-ee","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.apache.shiro/shiro-jakarta-ee","purlType":"maven","versions":[{"text":"≥ 2.0.0-alpha-0, < 2.2.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 3.0.0-alpha-1, < 3.0.0-alpha-2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.0.0-alpha-0, < 2.2.0 | ≥ 3.0.0-alpha-1, < 3.0.0-alpha-2","eol":null,"hubHref":null}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://shiro.apache.org/security-reports.html#cve_2026_44598","label":"shiro.apache.org/security-reports.html","hostname":"shiro.apache.org","tags":["Vendor Advisory","REPORT","WEB"]},{"url":"http://www.openwall.com/lists/oss-security/2026/05/25/8","label":"www.openwall.com/lists/oss-security/2026/05/25/8","hostname":"www.openwall.com","tags":["REPORT","WEB","Mailing List","Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-44598","label":"ubuntu.com/security/CVE-2026-44598","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-44598","label":"www.cve.org/CVERecord?id=CVE-2026-44598","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://www.openwall.com/lists/oss-security/2026/05/25/8","label":"www.openwall.com/lists/oss-security/2026/05/25/8","hostname":"www.openwall.com","tags":["REPORT"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44598","label":"nvd.nist.gov/vuln/detail/CVE-2026-44598","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/apache/shiro","label":"github.com/apache/shiro","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-05-25T20:19:44.317Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-05-26T12:38:12.217Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T02:59:24.781Z","stale":false,"partial":false}}