What’s Vulnerable › Vulnerabilities

CVE-2021-43578

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-12 · updated 2026-06-17

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.

Affected products

• Jenkins project Jenkins Squash TM Publisher (Squash4Jenkins) Plugin: through 1.0.0

References

• http://www.openwall.com/lists/oss-security/2021/11/12/1
• https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2525
• http://www.openwall.com/lists/oss-security/2021/11/12/1
• https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2525

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