{"id":"CVE-2026-56091","aliases":["DEBIAN-CVE-2026-56091","EUVD-2026-39230","GHSA-qj64-jj84-w38j","UBUNTU-CVE-2026-56091"],"status":"published","title":"Apache Shiro: Authentication bypass in Guice-Web integration","description":"When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass.\nThis vulnerability is similar to  https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the `shiro-guice` module instead of the `shiro-spring` module.\n\nThis issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context.\n\nUpgrade to version 3.0.0 or later, which fixes the issue.","severity":{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/V:D/RE:L/U:Amber","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00669,"percentile":0.52415,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-289"],"published":"2026-06-25T08:45:19Z","modified":"2026-11-03T21:31:24Z","fixes":[{"ecosystem":"Maven","package":"org.apache.shiro:shiro-guice","fixed_in":["3.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.shiro:shiro-guice","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"3.0.0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-5","1.3.2-6"]},{"source":"osv","ecosystem":"Debian:13","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-6"]},{"source":"osv","ecosystem":"Debian:14","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-6"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.shiro:shiro-guice","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"3.0.0"}]}],"versions":["2.0.0","2.0.1","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.1.0","2.2.0","2.2.1","3.0.0-alpha-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.4-1","1.2.4-1ubuntu0.1~esm1","1.2.4-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-2","1.3.2-3~18.04","1.3.2-3~18.04.1","1.3.2-3ubuntu0.18.04.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-4","1.3.2-4ubuntu0.1","1.3.2-4ubuntu0.2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-4","1.3.2-5"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-5","1.3.2-5ubuntu0.24.04.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-6ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-6ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"shiro","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-6ubuntu1","1.3.2-6ubuntu2"]}],"products":[{"vendor":"apache software foundation","product":"apache shiro"}],"references":[{"url":"https://lists.apache.org/thread/onmtxmy2qonbpx7xlw3o34x8sctv47r7","tags":["vendor-advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56091","tags":["advisory"]},{"url":"https://github.com/github/advisory-database/pull/10078","tags":["web"]},{"url":"https://github.com/apache/shiro/commit/42aa34467ad30f085fc8e003042db0c397fe8d57","tags":["web"]},{"url":"https://github.com/advisories/GHSA-qj64-jj84-w38j"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-56091","tags":["advisory"]},{"url":"https://github.com/apache/shiro","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-56091","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-56091","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-56091","title":"Apache Shiro: Authentication bypass in Guice-Web integration","description":"When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass.\nThis vulnerability is similar to  https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the `shiro-guice` module instead of the `shiro-spring` module.\n\nThis issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context.\n\nUpgrade to version 3.0.0 or later, which fixes the issue.","status":"published","published":"2026-06-25T08:45:19.426Z","modified":"2026-06-25T12:10:34.365Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/V:D/RE:L/U:Amber","level":"high","assessor":"cna"}],"cwes":["CWE-289"],"updated_at":"2026-11-02T13:36:51.6229Z"}],"euvd":[{"id":"EUVD-2026-39230","description":"When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass.\nThis vulnerability is similar to  https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the `shiro-guice` module instead of the `shiro-spring` module.\n\nThis issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context.\n\nUpgrade to version 3.0.0 or later, which fixes the issue.","status":"published","published":"2026-06-25T08:45:19Z","modified":"2026-06-25T12:10:34Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/V:D/RE:L/U:Amber","level":"high"}],"updated_at":"2026-11-02T18:20:29.723653Z"}],"ghsa":[{"id":"GHSA-qj64-jj84-w38j","title":"Apache Shiro shiro-guice module vulnerable to authentication bypass","description":"When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass.\nThis vulnerability is similar to  https://www.cve.org/CVERecord?id=CVE-2020-1957, except that it affects the `shiro-guice` module instead of the `shiro-spring` module.\n\nThis issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context.\n\nUpgrade to version 3.0.0 or later, which fixes the issue.","status":"published","published":"2026-06-25T09:31:23Z","modified":"2026-11-03T21:24:24Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/V:D/RE:L/U:Amber","level":"high"}],"cwes":["CWE-289"],"updated_at":"2026-11-03T21:34:02.78186Z"}],"nvd":[{"id":"CVE-2026-56091","description":"When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass.\nThis vulnerability is similar to  https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the `shiro-guice` module instead of the `shiro-spring` module.\n\nThis issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context.\n\nUpgrade to version 3.0.0 or later, which fixes the issue.","status":"published","published":"2026-06-25T09:16:46.103Z","modified":"2026-10-25T23:10:00.167Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/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:P/AU:Y/R:X/V:D/RE:L/U:Amber","level":"high","assessor":"secondary"}],"cwes":["CWE-289"],"updated_at":"2026-11-02T14:12:25.67873Z"}],"osv":[{"id":"DEBIAN-CVE-2026-56091","description":"When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass. This vulnerability is similar to  https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the `shiro-guice` module instead of the `shiro-spring` module.  This issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context.  Upgrade to version 3.0.0 or later, which fixes the issue.","status":"published","published":"2026-06-25T09:16:46.103Z","modified":"2026-10-26T11:47:27.244871494Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/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:P/AU:Y/R:X/V:D/RE:L/U:Amber","level":"high"}],"updated_at":"2026-11-02T15:45:57.590991Z"},{"id":"GHSA-qj64-jj84-w38j","title":"Apache Shiro shiro-guice module vulnerable to authentication bypass","description":"When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass.\nThis vulnerability is similar to  https://www.cve.org/CVERecord?id=CVE-2020-1957, except that it affects the `shiro-guice` module instead of the `shiro-spring` module.\n\nThis issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context.\n\nUpgrade to version 3.0.0 or later, which fixes the issue.","status":"published","published":"2026-06-25T09:31:23Z","modified":"2026-11-03T21:31:24.748589787Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/V:D/RE:L/U:Amber","level":"high"}],"cwes":["CWE-289"],"updated_at":"2026-11-03T23:00:52.054748Z"},{"id":"UBUNTU-CVE-2026-56091","description":"When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass. This vulnerability is similar to https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the `shiro-guice` module instead of the `shiro-spring` module. This issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context. Upgrade to version 3.0.0 or later, which fixes the issue.","status":"published","published":"2026-06-25T09:16:00Z","modified":"2026-10-17T12:59:09.947597597Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/V:D/RE:L/U:Amber","level":"high"}],"updated_at":"2026-11-02T16:56:41.382716Z"}]}}