Jenkins 2.218 and earlier, LTS 2.204.1 and earlier did not use a constant-time comparison function for validating connection secrets, which could potentially allow an attacker to use a timing attack to obtain this secret.

Jenkins Blue Ocean Plugin 1.23.2 and earlier provides an undocumented feature flag that, when enabled, allows an attacker with Job/Configure or Job/Create permission to read arbitrary files on the Jenkins controller file system.

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier used a non-constant time comparison function when validating an HMAC.

Directory traversal vulnerability in Jenkins before 1.600 and LTS before 1.596.1 allows remote authenticated users with certain permissions to read arbitrary files via a symlink, related to building artifacts.

Jenkins Git Changelog Plugin 2.17 and earlier stored credentials unencrypted in job config.xml files on the Jenkins master where they could be viewed by users with Extended Read permission, or access to the master file system.

A cross-site request forgery vulnerability in Jenkins GitLab Plugin 1.5.11 and earlier in the GitLabConnectionConfig#doTestConnection form validation method allowed attackers to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

A missing permission check in Jenkins Slack Notification Plugin 2.19 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

Jenkins 2.275 and LTS 2.263.2 allows reading arbitrary files using the file browser for workspaces and archived artifacts due to a time-of-check to time-of-use (TOCTOU) race condition.

Jenkins S3 publisher Plugin 0.11.6 and earlier does not perform Run/Artifacts permission checks in various HTTP endpoints and API models, allowing attackers with Item/Read permission to obtain information about artifacts uploaded to S3, if the optional Run/Artifacts permission is enabled.

The doIndex function in hudson/util/RemotingDiagnostics.java in CloudBees Jenkins before 1.551 and LTS before 1.532.2 allows remote authenticated users with the ADMINISTER permission to obtain sensitive information via vectors related to heapDump.

Jenkins Mercurial Plugin 1251.va_b_121f184902 and earlier provides information about which jobs were triggered or scheduled for polling through its webhook endpoint, including jobs the user has no permission to access.

Docker Commons Plugin provides a list of applicable credential IDs to allow users configuring a job to select the one they'd like to use to authenticate with a Docker Registry. This functionality did not check permissions, allowing any user with Overall/Read permission to get a list of valid credentials IDs. Those could be used as part of an attack to capture the credentials using another vulnerability.

Jenkins LoadNinja Plugin 2.1 and earlier does not mask LoadNinja API keys displayed on the job configuration form, increasing the potential for attackers to observe and capture them.

Jenkins 2.550 and earlier, LTS 2.541.1 and earlier accepts Run Parameter values that refer to builds the user submitting the build does not have access to, allowing attackers with Item/Build and Item/Configure permission to obtain information about the existence of jobs, the existence of builds, and if a specified build exists, its display name.

An exposure of sensitive information vulnerability exists in Jenkins meliora-testlab Plugin 1.14 and earlier in TestlabNotifier.java that allows attackers with file system access to the Jenkins master to obtain the API key stored in this plugin's configuration.

A exposure of sensitive information vulnerability exists in Jenkins GitHub Pull Request Builder Plugin 1.41.0 and older in GhprbGitHubAuth.java that allows attackers with Overall/Read access to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

An exposure of sensitive information vulnerability exists in Jenkins GitHub Pull Request Builder Plugin version 1.39.0 and older in GhprbCause.java that allows an attacker with local file system access to obtain GitHub credentials.

A exposure of sensitive information vulnerability exists in Jenkins GitHub Plugin 1.29.1 and earlier in GitHubTokenCredentialsCreator.java that allows attackers to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

An exposure of sensitive information vulnerability exists in Jenkins Email Extension Plugin 2.61 and older in src/main/resources/hudson/plugins/emailext/ExtendedEmailPublisher/global.groovy and ExtendedEmailPublisherDescriptor.java that allows attackers with control of a Jenkins administrator's web browser (e.g. malicious extension) to retrieve the configured SMTP password.

An information exposure vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier, and the Stapler framework used by these releases, in core/src/main/java/org/kohsuke/stapler/RequestImpl.java, core/src/main/java/hudson/model/Descriptor.java that allows attackers with Overall/Administer permission or access to the local file system to obtain credentials entered by users if the form submission could not be successfully processed.

A exposure of sensitive information vulnerability exists in Jenkins Gitlab Hook Plugin 1.4.2 and older in gitlab_notifier.rb, views/gitlab_notifier/global.erb that allows attackers with local Jenkins master file system access or control of a Jenkins administrator's web browser (e.g. malicious extension) to retrieve the configured Gitlab token.

A exposure of sensitive information vulnerability exists in Jenkins Black Duck Hub Plugin 4.0.0 and older in PostBuildScanDescriptor.java that allows attackers with Overall/Read access to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

jenkins before versions 2.44, 2.32.2 is vulnerable to an information disclosure vulnerability in search suggestions (SECURITY-385). The autocomplete feature on the search box discloses the names of the views in its suggestions, including the ones for which the current user does not have access to.

jenkins-mailer-plugin before version 1.20 is vulnerable to an information disclosure while using the feature to send emails to a dynamically created list of users based on the changelogs. This could in some cases result in emails being sent to people who have no user account in Jenkins, and in rare cases even people who were not involved in whatever project was being built, due to some mapping based on the local-part of email addresses.

Jenkins before versions 2.44, 2.32.2 uses AES ECB block cipher mode without IV for encrypting secrets which makes Jenkins and the stored secrets vulnerable to unnecessary risks (SECURITY-304).

jenkins-email-ext before version 2.57.1 is vulnerable to an Information Exposure. The Email Extension Plugins is able to send emails to a dynamically created list of users based on the changelogs, like authors of SCM changes since the last successful build. This could in some cases result in emails being sent to people who have no user account in Jenkins, and in rare cases even people who were not involved in whatever project was being built, due to some mapping based on the local-part of email addresses.

The Pipeline: Input Step Plugin by default allowed users with Item/Read access to a pipeline to interact with the step to provide input. This has been changed, and now requires users to have the Item/Build permission instead.

GitHub Branch Source provides a list of applicable credential IDs to allow users configuring a job to select the one they'd like to use. This functionality did not check permissions, allowing any user with Overall/Read permission to get a list of valid credentials IDs. Those could be used as part of an attack to capture the credentials using another vulnerability.

Jenkins Git Client Plugin 2.4.2 and earlier creates temporary file with insecure permissions resulting in information disclosure

The re-key admin monitor was introduced in Jenkins 1.498 and re-encrypted all secrets in JENKINS_HOME with a new key. It also created a backup directory with all old secrets, and the key used to encrypt them. These backups were world-readable and not removed afterwards. Jenkins now deletes the backup directory, if present. Upgrading from before 1.498 will no longer create a backup directory. Administrators relying on file access permissions in their manually created backups are advised to check them for the directory $JENKINS_HOME/jenkins.security.RekeySecretAdminMonitor/backups, and delete it if present.

Jenkins 2.73.1 and earlier, 2.83 and earlier provides information about Jenkins user accounts which is generally available to anyone with Overall/Read permissions via the /user/(username)/api remote API. This included e.g. Jenkins users' email addresses if the Mailer Plugin is installed. The remote API now no longer includes information beyond the most basic (user ID and name) unless the user requesting it is a Jenkins administrator.

The remote API in Jenkins 2.73.1 and earlier, 2.83 and earlier at /computer/(agent-name)/api showed information about tasks (typically builds) currently running on that agent. This included information about tasks that the current user otherwise has no access to, e.g. due to lack of Item/Read permission. This has been fixed, and the API now only shows information about accessible tasks.

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier exposed session identifiers on a user's detail object in the whoAmI diagnostic page.

The webhook endpoint in Jenkins Gogs Plugin 1.0.15 and earlier provides unauthenticated attackers information about the existence of jobs in its output.

The Deploy to container Plugin stored passwords unencrypted as part of its configuration. This allowed users with Jenkins master local file system access, or users with Extended Read access to the jobs it is used in, to retrieve those passwords. The Deploy to container Plugin now integrates with Credentials Plugin to store passwords securely, and automatically migrates existing passwords.

In Jenkins Script Security Plugin version 1.36 and earlier, users with the ability to configure sandboxed Groovy scripts are able to use a type coercion feature in Groovy to create new `File` objects from strings. This allowed reading arbitrary files on the Jenkins master file system. Such a type coercion is now subject to sandbox protection and considered to be a call to the `new File(String)` constructor for the purpose of in-process script approval.

In Jenkins Git client Plugin 6.3.2 and earlier, except 6.1.4 and 6.2.1, Git URL field form validation responses differ based on whether the specified file path exists on the controller when specifying `amazon-s3` protocol for use with JGit, allowing attackers with Overall/Read permission to check for the existence of an attacker-specified file path on the Jenkins controller file system.

The API URL computer/(master)/api/xml in Jenkins before 2.3 and LTS before 1.651.2 allows remote authenticated users with extended read permission for the master node to obtain sensitive information about the global configuration via unspecified vectors.

Jenkins before 2.3 and LTS before 1.651.2 allow remote authenticated users with extended read access to obtain sensitive password information by reading a job configuration.

Jenkins before 2.3 and LTS before 1.651.2 allow remote authenticated users with read access to obtain sensitive plugin installation information by leveraging missing permissions checks in unspecified XML/JSON API endpoints.

Jenkins before 1.650 and LTS before 1.642.2 do not use a constant-time algorithm to verify API tokens, which makes it easier for remote attackers to determine API tokens via a brute-force approach.

Jenkins before 1.650 and LTS before 1.642.2 do not use a constant-time algorithm to verify CSRF tokens, which makes it easier for remote attackers to bypass a CSRF protection mechanism via a brute-force approach.

Jenkins before 1.638 and LTS before 1.625.2 do not properly verify the shared secret used in JNLP slave connections, which allows remote attackers to connect as slaves and obtain sensitive information or possibly gain administrative access by leveraging knowledge of the name of a slave.

The sidepanel widgets in the CLI command overview and help pages in Jenkins before 1.638 and LTS before 1.625.2 allow remote attackers to obtain sensitive information via a direct request to the pages.

The Fingerprints pages in Jenkins before 1.638 and LTS before 1.625.2 might allow remote attackers to obtain sensitive job and build name information via a direct request.

Jenkins Project Inheritance Plugin 2.0.0 and earlier displayed a list of environment variables passed to a build without masking sensitive variables contributed by the Mask Passwords Plugin.

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.

Jenkins Support Core Plugin 2.72 and earlier provides the serialized user authentication as part of the "About user (basic authentication details only)" information, which can include the session ID of the user creating the support bundle in some configurations.

The Datadog Plugin stores an API key to access the Datadog service in the global Jenkins configuration. While the API key is stored encrypted on disk, it was transmitted in plain text as part of the configuration form. This could result in exposure of the API key for example through browser extensions or cross-site scripting vulnerabilities. The Datadog Plugin now encrypts the API key transmitted to administrators viewing the global configuration form.

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.