CVE-2023-42795

Name: CVE-2023-42795
Creator: NVD / NIST
Published: 2023-10-10T18:15:18.933+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 2.16%

Last modified Jun 17, 2026

CVE-2023-42795 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 2.16% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

2.16%

79.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-459

Affected Software

Vendor	Product	Versions	Update
Apache	Tomcat	>= 8.5.0, < 8.5.94	—
Apache	Tomcat	>= 9.0.1, < 9.0.81	—
Apache	Tomcat	>= 10.1.1, < 10.1.14	—
Apache	Tomcat	9.0.0	Milestone1
Apache	Tomcat	10.1.0	Milestone1
Apache	Tomcat	11.0.0	Milestone1
Debian	Debian Linux	10.0	—
Debian	Debian Linux	11.0	—
Debian	Debian Linux	12.0	—

References

https://lists.apache.org/thread/065jfyo583490r9j2v73nhpyxdob56lwMailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2023/10/10/9Mailing List, Third Party Advisory
https://lists.apache.org/thread/065jfyo583490r9j2v73nhpyxdob56lwMailing List, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00020.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20231103-0007/
https://www.debian.org/security/2023/dsa-5521Third Party Advisory
https://www.debian.org/security/2023/dsa-5522Third Party Advisory

Timeline

Published: Oct 10, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-42795?

How severe is CVE-2023-42795?

CVE-2023-42795 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 2.16% probability of exploitation in the next 30 days.

How do I fix CVE-2023-42795?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-42795?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST