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…

Description

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.

Scores

EPSS (exploitation in 30 days)

10.6% · top 4.2% of all CVEs (4 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Mavenorg.apache.tomcat:tomcatGHSA-jrcp-c39h-r29x (opens in a new tab)

References (35)

• http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• GLSA-201705-09 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• 20160222 [SECURITY] CVE-2015-5346 Apache Tomcat Session fixation (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• openSUSE-SU-2016:0865 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• http://tomcat.apache.org/security-9.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• USN-3024-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• SUSE-SU-2016:0769 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• DSA-3530 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• http://svn.apache.org/viewvc?view=revision&revision=1713184 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://tomcat.apache.org/security-7.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• RHSA-2016:2046 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 83323 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• RHSA-2016:1089 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://tomcat.apache.org/security-8.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• RHSA-2016:1087 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://svn.apache.org/viewvc?view=revision&revision=1723414 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 1035069 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• https://bto.bluecoat.com/security-advisory/sa118 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150442 (opens in a new tab)x_refsource_CONFIRMx_transferred
• RHSA-2016:2807 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2016:1088 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• https://security.netapp.com/advisory/ntap-20180531-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• RHSA-2016:2808 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• SUSE-SU-2016:0822 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• https://bz.apache.org/bugzilla/show_bug.cgi?id=58809 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://svn.apache.org/viewvc?view=revision&revision=1713185 (opens in a new tab)x_refsource_CONFIRMx_transferred
• DSA-3609 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• http://svn.apache.org/viewvc?view=revision&revision=1723506 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://svn.apache.org/viewvc?view=revision&revision=1713187 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158626 (opens in a new tab)x_refsource_CONFIRMx_transferred
• DSA-3552 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• http://packetstormsecurity.com/files/135890/Apache-Tomcat-Session-Fixation.html (opens in a new tab)x_refsource_MISCx_transferred
• [tomcat-dev] 20200213 svn commit: r1873980 [27/34] - /tomcat/site/trunk/docs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-jrcp-c39h-r29x (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2015-5346](https://trackcve.app/badge/CVE-2015-5346.svg)](https://trackcve.app/cve/CVE-2015-5346)

Record last updated 14 Oct 2026, 21:30 UTC.