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Fencer Vulns
medium 6.5

CVE-2025-55668 json

Apache Tomcat: session fixation via rewrite valve

published 2025-08-13 14 mo ago modified 2026-09-08 2 mo ago also BIT-tomcat-2025-55668 , EUVD-2025-24574 , GHSA-23hv-mwm6-g8jf

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

Session Fixation vulnerability in Apache Tomcat via rewrite valve.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.

Patch / fix

  • maven org.apache.tomcat:tomcat-catalina 9.0.106, 10.1.42, 11.0.8
  • maven org.apache.tomcat.embed:tomcat-embed-core 9.0.106, 10.1.42, 11.0.8
  • bitnami tomcat 9.0.106, 10.1.42, 11.0.8
  • apache tomcat-catalina 9.0.106, 10.1.42, 11.0.8
  • apache tomcat 9.0.106, 10.1.42, 11.0.8
  • org.apache.tomcat tomcat-catalina 9.0.106, 10.1.42, 11.0.8
  • apache tomcat-embed-core 9.0.106, 10.1.42, 11.0.8
  • org.apache.tomcat.embed tomcat-embed-core 9.0.106, 10.1.42, 11.0.8
  • tomcat9 Debian 14, Debian 13, Debian 12 9.0.70-2
  • tomcat10 Debian 12 10.1.52-1~deb12u1
  • tomcat10 Debian 13 10.1.52-1~deb13u1
  • tomcat10 Debian 14 10.1.46-1
  • tomcat11 Debian 13 11.0.15-1~deb13u1
  • tomcat11 Debian 14 11.0.11-1

debian advisories DEBIAN-CVE-2025-55668

  • tomcat RHEL 8 1:9.0.120-1.el8_10
  • tomcat-lib RHEL 8 1:9.0.120-1.el8_10
  • tomcat-webapps RHEL 8 1:9.0.120-1.el8_10
  • tomcat-el-3.0-api RHEL 8 1:9.0.120-1.el8_10
  • tomcat-docs-webapp RHEL 8 1:9.0.120-1.el8_10
  • tomcat-jsp-2.3-api RHEL 8 1:9.0.120-1.el8_10
  • tomcat-admin-webapps RHEL 8 1:9.0.120-1.el8_10
  • tomcat-servlet-4.0-api RHEL 8 1:9.0.120-1.el8_10

red hat advisories RHSA-2026:68680RHSA-2026:68679RHSA-2026:68677RHSA-2026:68678RHSA-2026:68659RHSA-2026:67163

  • tomcat AlmaLinux 8 1:9.0.120-1.el8_10
  • tomcat-lib AlmaLinux 8 1:9.0.120-1.el8_10
  • tomcat-webapps AlmaLinux 8 1:9.0.120-1.el8_10
  • tomcat-el-3.0-api AlmaLinux 8 1:9.0.120-1.el8_10
  • tomcat-docs-webapp AlmaLinux 8 1:9.0.120-1.el8_10
  • tomcat-jsp-2.3-api AlmaLinux 8 1:9.0.120-1.el8_10
  • tomcat-admin-webapps AlmaLinux 8 1:9.0.120-1.el8_10
  • tomcat-servlet-4.0-api AlmaLinux 8 1:9.0.120-1.el8_10

almalinux advisories ALSA-2026:68677

  • tomcat Rocky Linux 10 1:10.1.49-1.el10_2.1

rocky linux advisories RLSA-2026:18537

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-55668 updated cvss 6.5

org.apache.tomcat/tomcat-catalina: tomcat: Apache Tomcat: session fixation via rewrite valve

  • Red Hat Certificate System 10 jss, redhat-pki Red Hat Data Grid 8 tomcat-catalina
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 6 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat6-el-2.1-api, +4 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 tomcat, tomcat-lib, tomcat-jsvc, tomcat-javadoc, tomcat-webapps, tomcat-el-2.2-api, +4 more Red Hat Enterprise Linux 8 log4j, log4j-jcl, log4j-web, log4j-slf4j, pki-servlet-engine, pki-servlet-4.0-api Red Hat Enterprise Linux 9 jss, log4j, pki-ca, idm-jss, pki-kra, pki-acme, +21 more Red Hat Enterprise Linux 10 jss, dogtag-pki, mod_proxy_cluster Red Hat Fuse 7 tomcat-catalina Red Hat JBoss Core Services jbcs-httpd24-mod_proxy_cluster, jbcs-httpd24-mod_cluster-native, jbcs-httpd24-mod_cluster-native-src-zip
    +8 more products
    Red Hat JBoss Enterprise Application Platform 7 tomcat-catalina, tomcat-catalina-ha Red Hat JBoss Enterprise Application Platform 8 tomcat-catalina, tomcat-catalina-ha Red Hat JBoss Enterprise Application Platform Expansion Pack tomcat-catalina, tomcat-catalina-ha Red Hat JBoss Web Server 5 tomcat-catalina, jws5-mod_cluster, tomcat-catalina-ha, tomcat-catalina-ant, jws5-mod_cluster-tomcat Red Hat JBoss Web Server 6 jws6-mod_cluster, tomcat-catalina-ha, tomcat-catalina-ant, jws6-mod_cluster-tomcat Red Hat OpenShift Dev Spaces devspaces/server-rhel8, devspaces/server-rhel9 Red Hat Process Automation 7 tomcat-catalina Red Hat Single Sign-On 7 tomcat-catalina
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 8) tomcat 9.0.120-1.el8_10, tomcat-lib 9.0.120-1.el8_10, tomcat-webapps 9.0.120-1.el8_10, tomcat-el-3.0-api 9.0.120-1.el8_10, tomcat-docs-webapp 9.0.120-1.el8_10, tomcat-jsp-2.3-api 9.0.120-1.el8_10, +2 more
    fixed: vendor fix RHSA-2026:68677
  • Red Hat Enterprise Linux AppStream (v. 9) tomcat 9.0.110-2.el9_8, tomcat-lib 9.0.110-2.el9_8, tomcat-webapps 9.0.110-2.el9_8, tomcat-el-3.0-api 9.0.110-2.el9_8, tomcat-docs-webapp 9.0.110-2.el9_8, tomcat-jsp-2.3-api 9.0.110-2.el9_8, +2 more
    fixed: vendor fix RHSA-2026:18916
  • Red Hat Enterprise Linux AppStream (v. 10) tomcat 10.1.49-1.el10, tomcat9 9.0.110-2.el10_2, tomcat-lib 10.1.49-1.el10, tomcat9-lib 9.0.110-2.el10_2, tomcat-webapps 10.1.49-1.el10, tomcat-el-5.0-api 10.1.49-1.el10, +10 more
    fixed: vendor fix RHSA-2026:18537
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) tomcat 9.0.120-1.el8_8, tomcat-lib 9.0.120-1.el8_8, tomcat-webapps 9.0.120-1.el8_8, tomcat-el-3.0-api 9.0.120-1.el8_8, tomcat-docs-webapp 9.0.120-1.el8_8, tomcat-jsp-2.3-api 9.0.120-1.el8_8, +2 more
    fixed: vendor fix RHSA-2026:68680
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) tomcat 9.0.120-1.el9_2, tomcat-lib 9.0.120-1.el9_2, tomcat-webapps 9.0.120-1.el9_2, tomcat-el-3.0-api 9.0.120-1.el9_2, tomcat-docs-webapp 9.0.120-1.el9_2, tomcat-jsp-2.3-api 9.0.120-1.el9_2, +2 more
    fixed: vendor fix RHSA-2026:68678
show 7 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) tomcat 9.0.120-1.el9_4, tomcat-lib 9.0.120-1.el9_4, tomcat-webapps 9.0.120-1.el9_4, tomcat-el-3.0-api 9.0.120-1.el9_4, tomcat-docs-webapp 9.0.120-1.el9_4, tomcat-jsp-2.3-api 9.0.120-1.el9_4, +2 more
    fixed: vendor fix RHSA-2026:68679
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) tomcat9 9.0.120-1.el10_0, tomcat9-lib 9.0.120-1.el10_0, tomcat9-webapps 9.0.120-1.el10_0, tomcat9-el-3.0-api 9.0.120-1.el10_0, tomcat9-docs-webapp 9.0.120-1.el10_0, tomcat9-jsp-2.3-api 9.0.120-1.el10_0, +2 more
    fixed: vendor fix RHSA-2026:67163
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) tomcat 9.0.120-1.el9_6, tomcat-lib 9.0.120-1.el9_6, tomcat-webapps 9.0.120-1.el9_6, tomcat-el-3.0-api 9.0.120-1.el9_6, tomcat-docs-webapp 9.0.120-1.el9_6, tomcat-jsp-2.3-api 9.0.120-1.el9_6, +2 more
    fixed: vendor fix RHSA-2026:68659
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) tomcat 9.0.120-1.el8_8, tomcat-lib 9.0.120-1.el8_8, tomcat-webapps 9.0.120-1.el8_8, tomcat-el-3.0-api 9.0.120-1.el8_8, tomcat-docs-webapp 9.0.120-1.el8_8, tomcat-jsp-2.3-api 9.0.120-1.el8_8, +2 more
    fixed: vendor fix RHSA-2026:68680
  • Red Hat Hardened Images tomcat10 10.1.54-1.hum1, tomcat11 11.0.21-0.1.hum1, tomcat10-lib 10.1.54-1.hum1, tomcat11-lib 11.0.21-0.1.hum1, tomcat10-common 10.1.54-1.hum1, tomcat10-webapps 10.1.54-1.hum1, +12 more
    fixed: vendor fix RHSA-2026:8334
  • Red Hat JBoss Web Server 6.2 on RHEL 8 jws6-tomcat 10.1.49-7.redhat_00006.1.el8jws, jws6-tomcat-lib 10.1.49-7.redhat_00006.1.el8jws, jws6-tomcat-javadoc 10.1.49-7.redhat_00006.1.el8jws, jws6-tomcat-selinux 10.1.49-7.redhat_00006.1.el8jws, jws6-tomcat-webapps 10.1.49-7.redhat_00006.1.el8jws, jws6-tomcat-el-5.0-api 10.1.49-7.redhat_00006.1.el8jws, +4 more Red Hat JBoss Web Server 6.2 on RHEL 9 jws6-tomcat 10.1.49-7.redhat_00006.1.el9jws, jws6-tomcat-lib 10.1.49-7.redhat_00006.1.el9jws, jws6-tomcat-javadoc 10.1.49-7.redhat_00006.1.el9jws, jws6-tomcat-selinux 10.1.49-7.redhat_00006.1.el9jws, jws6-tomcat-webapps 10.1.49-7.redhat_00006.1.el9jws, jws6-tomcat-el-5.0-api 10.1.49-7.redhat_00006.1.el9jws, +4 more Red Hat JBoss Web Server 6.2 on RHEL 10 jws6-tomcat 10.1.49-7.redhat_00006.1.el10jws, jws6-tomcat-lib 10.1.49-7.redhat_00006.1.el10jws, jws6-tomcat-javadoc 10.1.49-7.redhat_00006.1.el10jws, jws6-tomcat-selinux 10.1.49-7.redhat_00006.1.el10jws, jws6-tomcat-webapps 10.1.49-7.redhat_00006.1.el10jws, jws6-tomcat-el-5.0-api 10.1.49-7.redhat_00006.1.el10jws, +4 more
    fixed: vendor fix RHSA-2026:2740
  • Red Hat JBoss Web Server 6.2.0
    fixed: vendor fix RHSA-2026:2741

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
14 mo ago

Exploit prediction

0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.tomcat:tomcat-catalina
>=11.0.0-M1, <11.0.8
>=10.1.0-M1, <10.1.42
>=9.0.0.M1, <9.0.106
11.0.8
10.1.42
9.0.106
maven org.apache.tomcat.embed:tomcat-embed-core
>=11.0.0-M1, <11.0.8
>=10.1.0-M1, <10.1.42
>=9.0.0.M1, <9.0.106
11.0.8
10.1.42
9.0.106
bitnami tomcat
<9.0.106
>=10.0.0, <10.1.42
>=11.0.0, <11.0.8
9.0.106
10.1.42
11.0.8

Affected products

  • Apache Software Foundation Apache Tomcat

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.