{"id":"CVE-2016-8638","aliases":["EUVD-2022-2125","GHSA-376m-3rm2-9jm6","PYSEC-2026-360","RHSA-2016:2809"],"status":"published","title":"Session Fixation in ipsilon","description":"A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users.  This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a \"SAML2 multi-session vulnerability.\"","severity":{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02136,"percentile":0.82119,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-384"],"published":"2017-07-12T13:00:00Z","modified":"2026-10-27T17:45:04Z","fixes":[{"ecosystem":"PyPI","package":"ipsilon","fixed_in":["2.0.2","1.2.1","1.1.2","1.0.3"],"sources":["ghsa","osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-authform","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-authgssapi","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-authldap","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-base","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-client","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-filesystem","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-infosssd","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-persona","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-saml2","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-saml2-base","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-tools-ipa","fixed_in":["0:1.0.0-13.el7_3"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.0.2"}]}]},{"source":"ghsa","ecosystem":"PyPI","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.0"},{"fixed":"1.2.1"}]}]},{"source":"ghsa","ecosystem":"PyPI","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.1.2"}]}]},{"source":"ghsa","ecosystem":"PyPI","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.3"}]}]},{"source":"osv","ecosystem":"PyPI","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.0.2"}]}]},{"source":"osv","ecosystem":"PyPI","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.0"},{"fixed":"1.2.1"}]}],"versions":["1.2.0"]},{"source":"osv","ecosystem":"PyPI","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.1.2"}]}]},{"source":"osv","ecosystem":"PyPI","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.3"}]}]},{"source":"osv","ecosystem":"PyPI","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.3"},{"introduced":"1.1.0"},{"fixed":"1.1.2"},{"introduced":"2.0.0"},{"fixed":"2.0.2"},{"introduced":"1.2.0"},{"fixed":"1.2.1"}]}],"versions":["1.2.0"]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-authform","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-authgssapi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-authldap","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-filesystem","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-infosssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-persona","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-saml2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-saml2-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:7::server","package":"ipsilon-tools-ipa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-13.el7_3"}]}]}],"products":[{"vendor":"ipsilon_project","product":"ipsilon"}],"references":[{"url":"https://ipsilon-project.org/release/2.1.0.html","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8638","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory","web"]},{"url":"https://pagure.io/ipsilon/c/511fa8b7001c2f9a42301aa1d4b85aaf170a461c","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","web"]},{"url":"https://ipsilon-project.org/advisory/CVE-2016-8638.txt","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","web"]},{"url":"http://www.securityfocus.com/bid/94439","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","web"]},{"url":"http://rhn.redhat.com/errata/RHSA-2016-2809.html","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-8638","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2016:2809","tags":["web","advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2016-8638","tags":["web","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1392829","tags":["web","report"]},{"url":"https://github.com/ipsilon-project/ipsilon/commit/1c48414877fc110652b6078a29529972c7ec9122","tags":["web"]},{"url":"https://github.com/ipsilon-project/ipsilon/commit/64fc366c054fc6af1d9d2692902db169884b5f78","tags":["web"]},{"url":"https://github.com/ipsilon-project/ipsilon/commit/a33303b6beb5c316d7c18b23566b7666a4e307a4","tags":["web"]},{"url":"https://github.com/ipsilon-project/ipsilon/commit/b4744a92d4fa7f6d7ade0ae2d99a2dc0ea94734d","tags":["web"]},{"url":"https://github.com/advisories/GHSA-376m-3rm2-9jm6","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/ipsilon/PYSEC-2026-360.yaml","tags":["web"]},{"url":"https://pypi.org/project/ipsilon","tags":["web","package"]},{"url":"https://github.com/ipsilon-project/ipsilon","tags":["package"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2016/rhsa-2016_2809.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-8638","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2016-8638","description":"A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users.  This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a \"SAML2 multi-session vulnerability.\"","status":"published","published":"2017-07-12T13:00:00Z","modified":"2024-08-06T02:27:41.261Z","updated_at":"2026-11-02T14:33:32.415289Z"}],"euvd":[{"id":"EUVD-2022-2125","description":"A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users.  This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a \"SAML2 multi-session vulnerability.\"","status":"published","published":"2017-07-12T13:00:00Z","modified":"2024-08-06T02:27:41Z","updated_at":"2026-11-03T02:22:29.639634Z"}],"ghsa":[{"id":"GHSA-376m-3rm2-9jm6","title":"Session Fixation in ipsilon","description":"A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users.  This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a \"SAML2 multi-session vulnerability.\"","status":"published","published":"2022-05-14T03:55:23Z","modified":"2026-10-27T17:26:46Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:41:38.969831Z"}],"nvd":[{"id":"CVE-2016-8638","description":"A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users.  This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a \"SAML2 multi-session vulnerability.\"","status":"published","published":"2017-07-12T13:29:00.19Z","modified":"2026-06-17T00:54:39.553Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:03:38.290327Z"}],"osv":[{"id":"GHSA-376m-3rm2-9jm6","title":"Session Fixation in ipsilon","description":"A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users.  This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a \"SAML2 multi-session vulnerability.\"","status":"published","published":"2022-05-14T03:55:23Z","modified":"2026-10-27T17:45:04.012363817Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T15:46:35.406455Z"},{"id":"PYSEC-2026-360","title":"Session Fixation in ipsilon","description":"A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users.  This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a \"SAML2 multi-session vulnerability.\"","status":"published","published":"2026-06-29T11:50:32.27175Z","modified":"2026-07-02T13:00:07.935493576Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:56.847083Z"},{"id":"RHSA-2016:2809","title":"Red Hat Security Advisory: ipsilon security update","status":"published","published":"2024-09-15T23:50:28Z","modified":"2026-05-13T10:35:31.896472Z","cvss":[{"version":"3.0","score":8.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:03.734507Z"}]}}
