Summary
Stored XSS vulnerability in Jenkins Pipeline: Supporting APIs Plugin
Pipeline: Supporting APIs Plugin provides a feature to add hyperlinks, that send POST requests when clicked, to build logs. These links are used by Pipeline: Input Step Plugin to allow users to proceed or abort the build, or by Pipeline: Job Plugin to allow users to forcibly terminate the build after aborting it.
Pipeline: Supporting APIs Plugin 838.va_3a_087b_4055b and earlier does not sanitize or properly encode URLs of these hyperlinks in build logs.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to create Pipelines.
Pipeline: Supporting APIs Plugin 839.v35e2736cfd5c properly encodes URLs of these hyperlinks in build logs.
Impact
Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.
CVE-2022-43409 has a CVSS score of 8.0 (High). The vector is network-reachable, low privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (839.v35e2736cfd5c); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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Frequently Asked Questions
- What is CVE-2022-43409? CVE-2022-43409 is a high-severity cross-site scripting (XSS) vulnerability in org.jenkins-ci.plugins.workflow:workflow-support (maven), affecting versions < 839.v35e2736cfd5c. It is fixed in 839.v35e2736cfd5c. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
- How severe is CVE-2022-43409? CVE-2022-43409 has a CVSS score of 8.0 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of org.jenkins-ci.plugins.workflow:workflow-support are affected by CVE-2022-43409? org.jenkins-ci.plugins.workflow:workflow-support (maven) versions < 839.v35e2736cfd5c is affected.
- Is there a fix for CVE-2022-43409? Yes. CVE-2022-43409 is fixed in 839.v35e2736cfd5c. Upgrade to this version or later.
- Is CVE-2022-43409 exploitable, and should I be worried? Whether CVE-2022-43409 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2022-43409 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2022-43409? Upgrade
org.jenkins-ci.plugins.workflow:workflow-supportto 839.v35e2736cfd5c or later.