A denial of service vulnerability exists in Jenkins Monitoring Plugin 1.74.0 and earlier in PluginImpl.java that allows attackers to kill threads running on the Jenkins master.

An exposure of sensitive information vulnerability exists in Jenkins OpenId Connect Authentication Plugin 1.4 and earlier in OicSecurityRealm/config.jelly that allows attackers able to view a Jenkins administrator's web browser output, or control the browser (e.g. malicious extension) to retrieve the configured client secret.

A server-side request forgery vulnerability exists in Jenkins Kanboard Plugin 1.5.10 and earlier in KanboardGlobalConfiguration.java that allows attackers with Overall/Read permission to submit a GET request to an attacker-specified URL.

An session fixation vulnerability exists in Jenkins GitHub Authentication Plugin 0.29 and earlier in GithubSecurityRealm.java that allows unauthorized attackers to impersonate another user if they can control the pre-authentication session.

An exposure of sensitive information vulnerability exists in Jenkins GitHub Authentication Plugin 0.29 and earlier in GithubSecurityRealm/config.jelly that allows attackers able to view a Jenkins administrator's web browser output, or control the browser (e.g. malicious extension) to retrieve the configured client secret.

A data modification vulnerability exists in Jenkins Job Import Plugin 3.0 and earlier in JobImportAction.java that allows attackers to copy jobs from a preconfigured other Jenkins instance, potentially installing additional plugins necessary to load the imported job's configuration.

An exposure of sensitive information vulnerability exists in Jenkins Job Import Plugin 2.1 and earlier in src/main/java/org/jenkins/ci/plugins/jobimport/JobImportAction.java, src/main/java/org/jenkins/ci/plugins/jobimport/JobImportGlobalConfig.java, src/main/java/org/jenkins/ci/plugins/jobimport/model/JenkinsSite.java that allows attackers with Overall/Read permission to have Jenkins connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

An XML external entity processing vulnerability exists in Jenkins Job Import Plugin 2.1 and earlier in src/main/java/org/jenkins/ci/plugins/jobimport/client/RestApiClient.java that allows attackers with the ability to control the HTTP server (Jenkins) queried in preparation of job import to read arbitrary files, perform a denial of service attack, etc.

jenkins-plugin-config-file-provider: Stored XSS vulnerability in Config File Provider Plugin (SECURITY-1253)

An cross-site scripting vulnerability exists in Jenkins Config File Provider Plugin 3.4.1 and earlier in src/main/resources/lib/configfiles/configfiles.jelly that allows attackers with permission to define shared configuration files to execute arbitrary JavaScript when a user attempts to delete the shared configuration file.

jenkins-plugin-blueocean: XSS vulnerability via user description in Blue Ocean (SECURITY-1204)

An cross-site scripting vulnerability exists in Jenkins Blue Ocean Plugins 1.10.1 and earlier in blueocean-commons/src/main/java/io/jenkins/blueocean/commons/stapler/Export.java, blueocean-commons/src/main/java/io/jenkins/blueocean/commons/stapler/export/ExportConfig.java, blueocean-commons/src/main/java/io/jenkins/blueocean/commons/stapler/export/JSONDataWriter.java, blueocean-rest-impl/src/main/java/io/jenkins/blueocean/service/embedded/UserStatePreloader.java, blueocean-web/src/main/resources/io/jenkins/blueocean/PageStatePreloadDecorator/header.jelly that allows attackers with permission to edit a user's description in Jenkins to have Blue Ocean render arbitrary HTML when using it as that user.

jenkins-plugin-blueocean: Blue Ocean did not require CSRF tokens (SECURITY-1201)

A data modification vulnerability exists in Jenkins Blue Ocean Plugins 1.10.1 and earlier in blueocean-core-js/src/js/bundleStartup.js, blueocean-core-js/src/js/fetch.ts, blueocean-core-js/src/js/i18n/i18n.js, blueocean-core-js/src/js/urlconfig.js, blueocean-rest/src/main/java/io/jenkins/blueocean/rest/APICrumbExclusion.java, blueocean-web/src/main/java/io/jenkins/blueocean/BlueOceanUI.java, blueocean-web/src/main/resources/io/jenkins/blueocean/BlueOceanUI/index.jelly that allows attackers to bypass all cross-site request forgery protection in Blue Ocean API.

jenkins-plugin-token-macro: Recursive token expansion results in information disclosure and DoS in Token Macro Plugin (SECURITY-1102)

An information exposure and denial of service vulnerability exists in Jenkins Token Macro Plugin 2.5 and earlier in src/main/java/org/jenkinsci/plugins/tokenmacro/Parser.java, src/main/java/org/jenkinsci/plugins/tokenmacro/TokenMacro.java, src/main/java/org/jenkinsci/plugins/tokenmacro/impl/AbstractChangesSinceMacro.java, src/main/java/org/jenkinsci/plugins/tokenmacro/impl/ChangesSinceLastBuildMacro.java, src/main/java/org/jenkinsci/plugins/tokenmacro/impl/ProjectUrlMacro.java that allows attackers with the ability to control token macro input (such as SCM changelogs) to define recursive input that results in unexpected macro evaluation.

jenkins-plugin-git: CSRF vulnerability in Git Plugin (SECURITY-1095)

A cross-site request forgery vulnerability exists in Jenkins Git Plugin 3.9.1 and earlier in src/main/java/hudson/plugins/git/GitTagAction.java that allows attackers to create a Git tag in a workspace and attach corresponding metadata to a build record.

An improper certificate validation vulnerability exists in Jenkins Active Directory Plugin 2.10 and earlier in src/main/java/hudson/plugins/active_directory/ActiveDirectoryDomain.java, src/main/java/hudson/plugins/active_directory/ActiveDirectorySecurityRealm.java, src/main/java/hudson/plugins/active_directory/ActiveDirectoryUnixAuthenticationProvider.java that allows attackers to impersonate the Active Directory server Jenkins connects to for authentication if Jenkins is configured to use StartTLS.

A cross-site request forgery vulnerability exists in Jenkins Warnings Next Generation Plugin 2.1.1 and earlier in src/main/java/io/jenkins/plugins/analysis/warnings/groovy/GroovyParser.java that allows attackers to execute arbitrary code via a form validation HTTP endpoint.

A cross-site request forgery vulnerability exists in Jenkins Warnings Plugin 5.0.0 and earlier in src/main/java/hudson/plugins/warnings/GroovyParser.java that allows attackers to execute arbitrary code via a form validation HTTP endpoint.

A sandbox bypass vulnerability exists in Jenkins Groovy Plugin 2.0 and earlier in src/main/java/hudson/plugins/groovy/StringScriptSource.java that allows attackers with Overall/Read permission to provide a Groovy script to an HTTP endpoint that can result in arbitrary code execution on the Jenkins master JVM.

jenkins-plugin-script-security: Sandbox Bypass in Script Security Plugin (SECURITY-1292)

A sandbox bypass vulnerability exists in Jenkins Script Security Plugin 1.50 and earlier in src/main/java/org/jenkinsci/plugins/scriptsecurity/sandbox/groovy/SecureGroovyScript.java that allows attackers with Overall/Read permission to provide a Groovy script to an HTTP endpoint that can result in arbitrary code execution on the Jenkins master JVM.

jenkins: deleting a user record will does not invalidate existing sessions

An improper authorization vulnerability exists in Jenkins 2.158 and earlier, LTS 2.150.1 and earlier in core/src/main/java/hudson/security/AuthenticationProcessingFilter2.java that allows attackers to extend the duration of active HTTP sessions indefinitely even though the user account may have been deleted in the mean time.

jenkins: cookie crafted using Jenkins script console allows unauthorised access to Jenkins instance

An improper authorization vulnerability exists in Jenkins 2.158 and earlier, LTS 2.150.1 and earlier in core/src/main/java/hudson/security/TokenBasedRememberMeServices2.java that allows attackers with Overall/RunScripts permission to craft Remember Me cookies that would never expire, allowing e.g. to persist access to temporarily compromised user accounts.