CVE-2020-2094: Missing permission checks in Health Advisor by CloudBees Plugin
Summary
CVE-2020-2094: Missing permission checks in Health Advisor by CloudBees Plugin. Affects org.jenkins-ci.plugins:cloudbees-jenkins-advisor versions < 3.0.1. Fixed in 3.0.1. How to fix ↓
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Background
The Health Advisor by CloudBees Plugin is a Maven package that provides health checks and recommendations for Jenkins instances. It helps users identify potential issues and improve the overall health of their Jenkins environment. This plugin is widely used by Jenkins administrators and users to ensure the stability and performance of their Jenkins installations.
Vulnerability Detail
The Health Advisor by CloudBees Plugin version 3.0 and earlier suffers from missing permission checks in methods performing form validation. This vulnerability allows users with Overall/Read access to send an email with fixed content to an attacker-specified recipient. Additionally, these form validation methods do not require POST requests, making it vulnerable to Cross-Site Request Forgery (CSRF) attacks. An attacker could exploit this vulnerability to send malicious emails or perform unauthorized actions on the affected Jenkins instance.
How To Fix
Latest published version: 412.v9d1e9d6a_f428 as of 22 Oct 2026
Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
3.0.1
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is recommended to upgrade to the fixed version of the plugin as soon as possible.
Conclusion
The Health Advisor by CloudBees Plugin version 3.0 and earlier is vulnerable to missing permission checks and CSRF attacks. It is crucial for users to upgrade to version 3.0.1 or later to mitigate the risk of unauthorized actions and email abuse. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability allows users with Overall/Read access to send fixed-content emails to an attacker-specified recipient. It also exposes the affected Jenkins instance to CSRF attacks, potentially leading to unauthorized actions.
Users of Health Advisor by CloudBees Plugin versions 3.0 and earlier are affected by this vulnerability.
There are no known public exploits for this vulnerability at the time of this report.
Yes, upgrading to version 3.0.1 of the Health Advisor by CloudBees Plugin fixes this vulnerability.
To update the plugin, navigate to the Manage Plugins section in Jenkins and select the available update for the Health Advisor by CloudBees Plugin.
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