CVE-2023-43497

Name: CVE-2023-43497
Creator: NVD / NIST
Published: 2023-09-20T17:15:11.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.80%

Last modified Jun 17, 2026

CVE-2023-43497 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. In Jenkins 2.423 and earlier, LTS 2.414.1 and earlier, processing file uploads using the Stapler web framework creates temporary files in the default system temporary directory with the default permissions for newly created files, potentially allowing attackers with access to the Jenkins controller file system to read and write the files before they are used.. EPSS estimates a 0.80% chance of exploitation in the next 30 days.

Description

In Jenkins 2.423 and earlier, LTS 2.414.1 and earlier, processing file uploads using the Stapler web framework creates temporary files in the default system temporary directory with the default permissions for newly created files, potentially allowing attackers with access to the Jenkins controller file system to read and write the files before they are used.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.80%

51.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Jenkins	Jenkins	< 2.414.2
Jenkins	Jenkins	< 2.424

References

http://www.openwall.com/lists/oss-security/2023/09/20/5Mailing List, Third Party Advisory
https://www.jenkins.io/security/advisory/2023-09-20/#SECURITY-3073Vendor Advisory
http://www.openwall.com/lists/oss-security/2023/09/20/5Mailing List, Third Party Advisory
https://www.jenkins.io/security/advisory/2023-09-20/#SECURITY-3073Vendor Advisory

Timeline

Published: Sep 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-43497?

How severe is CVE-2023-43497?

CVE-2023-43497 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.

How do I fix CVE-2023-43497?

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-2023-43497?

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

Scan your code now

Source: NVD / NIST