{"id":"CVE-2021-26296","aliases":["EUVD-2021-1329","GHSA-gq67-pp9w-43gp"],"status":"published","title":"Cross-Site Request Forgery (CSRF) vulnerability in Apache MyFaces","description":"In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02889,"percentile":0.8707,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-330","CWE-352"],"published":"2021-02-19T08:30:14Z","modified":"2026-10-24T10:30:17Z","fixes":[{"ecosystem":"Maven","package":"org.apache.myfaces.core:myfaces-core-module","fixed_in":["2.0.25","2.1.19","2.2.14","2.3.8"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.myfaces.core:myfaces-core-module","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.25"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.myfaces.core:myfaces-core-module","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.1.0"},{"fixed":"2.1.19"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.myfaces.core:myfaces-core-module","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.2.0"},{"fixed":"2.2.14"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.myfaces.core:myfaces-core-module","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.3.0"},{"fixed":"2.3.8"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.myfaces.core:myfaces-core-module","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.25"}]}],"versions":["2.0.13","2.0.14","2.0.15","2.0.16","2.0.17","2.0.18","2.0.19","2.0.20","2.0.21","2.0.22","2.0.23","2.0.24"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.myfaces.core:myfaces-core-module","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.1.0"},{"fixed":"2.1.19"}]}],"versions":["2.1.10","2.1.11","2.1.12","2.1.13","2.1.14","2.1.15","2.1.16","2.1.17","2.1.18","2.1.7","2.1.8","2.1.9"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.myfaces.core:myfaces-core-module","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.2.0"},{"fixed":"2.2.14"}]}],"versions":["2.2.0","2.2.1","2.2.10","2.2.11","2.2.12","2.2.13","2.2.2","2.2.3","2.2.4","2.2.5","2.2.6","2.2.7","2.2.8","2.2.9"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.myfaces.core:myfaces-core-module","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.3.0"},{"fixed":"2.3.8"}]}],"versions":["2.3-next-M1","2.3-next-M2","2.3-next-M3","2.3-next-M4","2.3-next-M5","2.3-next-M6","2.3-next-M7","2.3-next-M8","2.3-next-M9","2.3.0","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","2.3.6","2.3.7"]}],"products":[{"vendor":"apache","product":"myfaces"},{"vendor":"apache software foundation","product":"apache myfaces core"},{"vendor":"netapp","product":"oncommand_insight"}],"references":[{"url":"https://lists.apache.org/thread.html/r2b73e2356c6155e9ec78fdd8f72a4fac12f3e588014f5f535106ed9b%40%3Cannounce.apache.org%3E","tags":["x_refsource_MISC","x_transferred","Mailing List","Vendor Advisory","advisory","web"]},{"url":"http://seclists.org/fulldisclosure/2021/Feb/66","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Mailing List","Third Party Advisory","advisory","web"]},{"url":"http://packetstormsecurity.com/files/161484/Apache-MyFaces-2.x-Cross-Site-Request-Forgery.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry","evidence","web"]},{"url":"https://security.netapp.com/advisory/ntap-20210528-0007/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26296","tags":["advisory"]},{"url":"https://github.com/apache/myfaces/commit/cc6e1cc7b9aa17e52452f7f2657b3af9c421b2b2","tags":["web"]},{"url":"https://issues.apache.org/jira/browse/MYFACES-4373","tags":["web"]},{"url":"https://github.com/advisories/GHSA-gq67-pp9w-43gp"},{"url":"https://security.netapp.com/advisory/ntap-20210528-0007","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2021-26296","title":"Cross-Site Request Forgery (CSRF) vulnerability in Apache MyFaces","description":"In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.","status":"published","published":"2021-02-19T08:30:14Z","modified":"2025-02-13T16:27:52.47Z","cwes":["CWE-352"],"updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-1329","description":"In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.","status":"published","published":"2021-02-19T08:30:14Z","modified":"2025-02-13T16:27:52Z","cvss":[{"version":"","score":0,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"none"}],"updated_at":"2026-11-03T00:03:53.290549Z"}],"ghsa":[{"id":"GHSA-gq67-pp9w-43gp","title":"Cryptographically weak CSRF tokens in Apache MyFaces","description":"In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.\n\n\nMitigation:\nExisting web.xml configuration parameters can be used to direct\nMyFaces to use SecureRandom for CSRF token generation:\n\norg.apache.myfaces.RANDOM_KEY_IN_VIEW_STATE_SESSION_TOKEN=secureRandom\norg.apache.myfaces.RANDOM_KEY_IN_CSRF_SESSION_TOKEN=secureRandom\norg.apache.myfaces.RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN=secureRandom","status":"published","published":"2021-06-16T17:31:39Z","modified":"2023-02-01T05:05:35Z","cwes":["CWE-330","CWE-352"],"updated_at":"2026-11-02T14:36:34.917834Z"}],"nvd":[{"id":"CVE-2021-26296","description":"In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.","status":"published","published":"2021-02-19T09:15:13.283Z","modified":"2026-06-17T03:43:04.383Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5.1,"vector":"AV:N/AC:H/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:06:50.031227Z"}],"osv":[{"id":"CVE-2021-26296","description":"In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.","status":"published","published":"2021-02-19T09:15:13.283Z","modified":"2026-10-24T10:30:17.939505079Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:18.778776Z"},{"id":"GHSA-gq67-pp9w-43gp","title":"Cryptographically weak CSRF tokens in Apache MyFaces","description":"In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.\n\n\nMitigation:\nExisting web.xml configuration parameters can be used to direct\nMyFaces to use SecureRandom for CSRF token generation:\n\norg.apache.myfaces.RANDOM_KEY_IN_VIEW_STATE_SESSION_TOKEN=secureRandom\norg.apache.myfaces.RANDOM_KEY_IN_CSRF_SESSION_TOKEN=secureRandom\norg.apache.myfaces.RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN=secureRandom","status":"published","published":"2021-06-16T17:31:39Z","modified":"2026-09-10T03:49:06.075401802Z","cwes":["CWE-330","CWE-352"],"updated_at":"2026-11-02T15:46:48.191583Z"}]}}