CVE-2021-43578

Name: CVE-2021-43578
Creator: NVD / NIST
Published: 2021-11-12T11:15:08.34+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.07%

Last modified Jun 17, 2026

CVE-2021-43578 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Jenkins Squash TM Publisher (Squash4Jenkins) Plugin 1.0.0 and earlier implements an agent-to-controller message that does not implement any validation of its input, allowing attackers able to control agent processes to replace arbitrary files on the Jenkins controller file system with an attacker-controlled JSON string.. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

Description

Jenkins Squash TM Publisher (Squash4Jenkins) Plugin 1.0.0 and earlier implements an agent-to-controller message that does not implement any validation of its input, allowing attackers able to control agent processes to replace arbitrary files on the Jenkins controller file system with an attacker-controlled JSON string.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

1.07%

60.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Jenkins	Squash Tm Publisher	<= 1.0.0

References

http://www.openwall.com/lists/oss-security/2021/11/12/1Mailing List, Third Party Advisory
https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2525Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/11/12/1Mailing List, Third Party Advisory
https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2525Vendor Advisory

Timeline

Published: Nov 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43578?

How severe is CVE-2021-43578?

CVE-2021-43578 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43578?

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-2021-43578?

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

Scan your code now

Source: NVD / NIST