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CVE-2023-42795

Apache Tomcat: Failure during request clean-up leads to sensitive data leaking to subsequent requests

Published: Oct 10, 2023Updated: Aug 7, 2025 Sources: CVE List NVD GHSA BDU csafCWE-459
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
2.2%
Top 20.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Incomplete Cleanup vulnerability in Apache Tomcat.When recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process leading to information leaking from the current request/response to the next. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-459

Affected Products

Apache TomcatApache Software Foundation
On-premWeb App
Networking Infrastructure / load-balancer-proxy
tomcatapache
On-premWeb App
Networking Infrastructure / load-balancer-proxy
debian linuxdebian
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
debianoss-projectGBOperating Systemsaka debian gnu/linux
red hat inc.commercialUSOperating Systemsaka red hat
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
and 11 more affected products View all →

Exploitability

Official Patch Available

References

https://lists.apache.org/thread/065jfyo583490r9j2v73nhpyxdob56lw
lists.apache.org
https://cert-portal.siemens.com/productcert/csaf/ssa-784301.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-784301.html
cert-portal.siemens.com
and 30 more references View all →

Timeline

Published
Oct 10, 2023
Last Updated
Aug 7, 2025

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