--- id: CVE-2015-5346 title: >- Session fixation vulnerability in Apache Tomcat 7.x before 7.0.66, 8.x before 8.0.30, and 9.x before 9.0.0.M2, when different session settings are used for deployments of multiple versions of the same web application, might allow remote … summary: >- Session fixation vulnerability in Apache Tomcat 7.x before 7.0.66, 8.x before 8.0.30, and 9.x before 9.0.0.M2, when different session settings are used for deployments of multiple versions of the same web application, might allow remote … severity: high cvss: 8.1 cvssVector: 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H' vendor: apache product: tomcat affected: - tomcat = 7.0.0 - tomcat = 7.0.2 - tomcat = 7.0.4 - tomcat = 7.0.5 - tomcat = 7.0.6 - tomcat = 7.0.10 - tomcat = 7.0.11 - tomcat = 7.0.12 - tomcat = 7.0.14 - tomcat = 7.0.16 - tomcat = 7.0.19 - tomcat = 7.0.20 - tomcat = 7.0.21 - tomcat = 7.0.22 - tomcat = 7.0.23 - tomcat = 7.0.25 - tomcat = 7.0.26 - tomcat = 7.0.27 - tomcat = 7.0.28 - tomcat = 7.0.29 - tomcat = 7.0.30 - tomcat = 7.0.32 - tomcat = 7.0.33 - tomcat = 7.0.34 - tomcat = 7.0.35 - tomcat = 7.0.37 - tomcat = 7.0.39 - tomcat = 7.0.40 - tomcat = 7.0.41 - tomcat = 7.0.42 - tomcat = 7.0.47 - tomcat = 7.0.50 - tomcat = 7.0.52 - tomcat = 7.0.53 - tomcat = 7.0.54 - tomcat = 7.0.55 - tomcat = 7.0.56 - tomcat = 7.0.57 - tomcat = 7.0.59 - tomcat = 7.0.61 - tomcat = 7.0.62 - tomcat = 7.0.63 - tomcat = 7.0.64 - tomcat = 7.0.65 - tomcat = 8.0.0 - tomcat = 8.0.1 - tomcat = 8.0.3 - tomcat = 8.0.11 - tomcat = 8.0.12 - tomcat = 8.0.14 - tomcat = 8.0.15 - tomcat = 8.0.17 - tomcat = 8.0.18 - tomcat = 8.0.20 - tomcat = 8.0.21 - tomcat = 8.0.22 - tomcat = 8.0.23 - tomcat = 8.0.24 - tomcat = 8.0.26 - tomcat = 8.0.27 - tomcat = 8.0.28 - tomcat = 8.0.29 - tomcat = 9.0.0 - ubuntu_linux = 12.04 - ubuntu_linux = 14.04 - ubuntu_linux = 15.10 - ubuntu_linux = 16.04 - debian_linux = 7.0 - debian_linux = 8.0 published: '2016-02-25' updated: '2026-10-14' sourceUpdated: '2026-10-14T22:17:13.207' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2015-5346' references: - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00047.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00069.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00085.html' label: secalert@redhat.com - url: >- http://packetstormsecurity.com/files/135890/Apache-Tomcat-Session-Fixation.html label: secalert@redhat.com - url: 'http://rhn.redhat.com/errata/RHSA-2016-1089.html' label: secalert@redhat.com - url: 'http://rhn.redhat.com/errata/RHSA-2016-2046.html' label: secalert@redhat.com - url: 'http://rhn.redhat.com/errata/RHSA-2016-2807.html' label: secalert@redhat.com - url: 'http://rhn.redhat.com/errata/RHSA-2016-2808.html' label: secalert@redhat.com - url: 'http://seclists.org/bugtraq/2016/Feb/143' label: secalert@redhat.com - url: 'http://svn.apache.org/viewvc?view=revision&revision=1713184' label: secalert@redhat.com - url: 'http://svn.apache.org/viewvc?view=revision&revision=1713185' label: secalert@redhat.com - url: 'http://svn.apache.org/viewvc?view=revision&revision=1713187' label: secalert@redhat.com - url: 'http://svn.apache.org/viewvc?view=revision&revision=1723414' label: secalert@redhat.com - url: 'http://svn.apache.org/viewvc?view=revision&revision=1723506' label: secalert@redhat.com - url: 'http://tomcat.apache.org/security-7.html' label: secalert@redhat.com - url: 'http://tomcat.apache.org/security-8.html' label: secalert@redhat.com - url: 'http://tomcat.apache.org/security-9.html' label: secalert@redhat.com - url: 'http://www.debian.org/security/2016/dsa-3530' label: secalert@redhat.com - url: 'http://www.debian.org/security/2016/dsa-3552' label: secalert@redhat.com - url: 'http://www.debian.org/security/2016/dsa-3609' label: secalert@redhat.com - url: >- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html label: secalert@redhat.com - url: >- http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html label: secalert@redhat.com - url: >- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html label: secalert@redhat.com - url: 'http://www.securityfocus.com/bid/83323' label: secalert@redhat.com - url: 'http://www.securitytracker.com/id/1035069' label: secalert@redhat.com - url: 'http://www.ubuntu.com/usn/USN-3024-1' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2016:1087' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2016:1088' label: secalert@redhat.com - url: 'https://bto.bluecoat.com/security-advisory/sa118' label: secalert@redhat.com - url: 'https://bz.apache.org/bugzilla/show_bug.cgi?id=58809' label: secalert@redhat.com - url: >- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150442 label: secalert@redhat.com - url: >- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158626 label: secalert@redhat.com - url: >- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E label: secalert@redhat.com - url: 'https://security.gentoo.org/glsa/201705-09' label: secalert@redhat.com - url: 'https://security.netapp.com/advisory/ntap-20180531-0001/' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00047.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00069.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00085.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://packetstormsecurity.com/files/135890/Apache-Tomcat-Session-Fixation.html label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://rhn.redhat.com/errata/RHSA-2016-1089.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://rhn.redhat.com/errata/RHSA-2016-2046.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://rhn.redhat.com/errata/RHSA-2016-2807.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://rhn.redhat.com/errata/RHSA-2016-2808.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://seclists.org/bugtraq/2016/Feb/143' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://svn.apache.org/viewvc?view=revision&revision=1713184' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://svn.apache.org/viewvc?view=revision&revision=1713185' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://svn.apache.org/viewvc?view=revision&revision=1713187' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://svn.apache.org/viewvc?view=revision&revision=1723414' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://svn.apache.org/viewvc?view=revision&revision=1723506' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://tomcat.apache.org/security-7.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://tomcat.apache.org/security-8.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://tomcat.apache.org/security-9.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.debian.org/security/2016/dsa-3530' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.debian.org/security/2016/dsa-3552' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.debian.org/security/2016/dsa-3609' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.securityfocus.com/bid/83323' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.securitytracker.com/id/1035069' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.ubuntu.com/usn/USN-3024-1' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2016:1087' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2016:1088' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://bto.bluecoat.com/security-advisory/sa118' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://bz.apache.org/bugzilla/show_bug.cgi?id=58809' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150442 label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158626 label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.gentoo.org/glsa/201705-09' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20180531-0001/' label: af854a3a-2127-422b-91ae-364da2661108 tags: - nvd epss: 0.10573 epssPercentile: 0.95722 ingestedAt: '2026-10-14T23:00:01.998Z' --- ## Overview Session fixation vulnerability in Apache Tomcat 7.x before 7.0.66, 8.x before 8.0.30, and 9.x before 9.0.0.M2, when different session settings are used for deployments of multiple versions of the same web application, might allow remote attackers to hijack web sessions by leveraging use of a requestedSessionSSL field for an unintended request, related to CoyoteAdapter.java and Request.java. ## Affected - `tomcat = 7.0.0` - `tomcat = 7.0.2` - `tomcat = 7.0.4` - `tomcat = 7.0.5` - `tomcat = 7.0.6` - `tomcat = 7.0.10` - `tomcat = 7.0.11` - `tomcat = 7.0.12` - `tomcat = 7.0.14` - `tomcat = 7.0.16` - `tomcat = 7.0.19` - `tomcat = 7.0.20` - `tomcat = 7.0.21` - `tomcat = 7.0.22` - `tomcat = 7.0.23` - `tomcat = 7.0.25` - `tomcat = 7.0.26` - `tomcat = 7.0.27` - `tomcat = 7.0.28` - `tomcat = 7.0.29` - `tomcat = 7.0.30` - `tomcat = 7.0.32` - `tomcat = 7.0.33` - `tomcat = 7.0.34` - `tomcat = 7.0.35` - `tomcat = 7.0.37` - `tomcat = 7.0.39` - `tomcat = 7.0.40` - `tomcat = 7.0.41` - `tomcat = 7.0.42` - `tomcat = 7.0.47` - `tomcat = 7.0.50` - `tomcat = 7.0.52` - `tomcat = 7.0.53` - `tomcat = 7.0.54` - `tomcat = 7.0.55` - `tomcat = 7.0.56` - `tomcat = 7.0.57` - `tomcat = 7.0.59` - `tomcat = 7.0.61` - `tomcat = 7.0.62` - `tomcat = 7.0.63` - `tomcat = 7.0.64` - `tomcat = 7.0.65` - `tomcat = 8.0.0` - `tomcat = 8.0.1` - `tomcat = 8.0.3` - `tomcat = 8.0.11` - `tomcat = 8.0.12` - `tomcat = 8.0.14` - `tomcat = 8.0.15` - `tomcat = 8.0.17` - `tomcat = 8.0.18` - `tomcat = 8.0.20` - `tomcat = 8.0.21` - `tomcat = 8.0.22` - `tomcat = 8.0.23` - `tomcat = 8.0.24` - `tomcat = 8.0.26` - `tomcat = 8.0.27` - `tomcat = 8.0.28` - `tomcat = 8.0.29` - `tomcat = 9.0.0` - `ubuntu_linux = 12.04` - `ubuntu_linux = 14.04` - `ubuntu_linux = 15.10` - `ubuntu_linux = 16.04` - `debian_linux = 7.0` - `debian_linux = 8.0` ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges.