XSS vulnerability via user description in Blue Ocean

Blue Ocean did not properly escape HTML/JavaScript content set on the current user's description field, resulting in a cross-site scripting vulnerability exploitable by administrators and other people accessing Jenkins with the same user account. Blue Ocean now properly escapes HTML/JavaScript...

Potential denial of service through cron expression form validation

The form validation for cron expressions e.g. "Poll SCM", "Build periodically" could enter infinite loops when cron expressions only matching certain rare dates were entered, blocking request handling threads indefinitely...

Ephemeral user record creation

By accessing a specific crafted URL on Jenkins instances using Jenkins' own user database, users without Overall/Read access could create ephemeral user records. This behavior could be abused to create a large number of ephemeral user records in memory. Accessing this URL now no longer results in...

Reflected XSS vulnerability

The wrapper query parameter for the XML variant of the Jenkins remote API did not validate the specified tag name. This resulted in a reflected cross-site scripting vulnerability. Only legal XML tag names are now allowed for the wrapper query parameter...

Session fixation vulnerability on user signup

When signing up for a new user account on instances using Jenkins' own user database, Jenkins did not invalidate the existing session and create a new one. This allowed session fixation. Jenkins now invalidates the existing session and creates a new one when logging in after user signup...

PAM Authentication Plugin did not properly validate user accounts

The pam4j library bundled in PAM Authentication Plugin had a bug that resulted in it not properly validating user accounts. The bundled version of the library was updated to include the fix for this...

Users without Overall/Read permission can have Jenkins reset parts of global configuration on the next restart

Unauthenticated users could provide maliciously crafted login credentials that cause Jenkins to move the config.xml file from the Jenkins home directory. This configuration file contains basic configuration of Jenkins, including the selected security realm and authorization strategy. If Jenkins i...

Users were able to register user names containing control characters

The built-in Jenkins user database optionally allows user registration. This feature did not properly sanitize user names, allowing registration of user names containing control characters. This could be used to confuse administrators appearing to be a different user while preventing deletion of...

Exposure of System-scoped credentials in workflow-multibranch

workflow-multibranch 841.vec5b9e1806ec and earlier does not set the appropriate context for credentials lookup in the resolveScm Pipeline step, allowing the use of System-scoped credentials otherwise reserved for the global configuration. This allows attackers with Item/Configure permission to...

Improper access control in ldap allows SSRF

Jenkins uses the https://github.com/jenkinsci/staplerStapler web framework for HTTP request handling. Stapler's data-binding mechanism instantiates objects by invoking constructors annotated with @DataBoundConstructor and binding submitted data to their arguments. ldap 807.809.vd3a4e5e4ec98 and...

Unsafe deserialization allows overwriting other agents

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the REST API and CLI endpoints for updating agent configuration do not prevent a submitted configuration from overwriting a different agent by specifying that agent's name in the submitted XML document. This allows attackers with...

Incorrect permission check in Appearance configuration page

Jenkins 2.421 through 2.579 both inclusive, LTS 2.426.1 through 2.568.2 both inclusive does not correctly perform permission checks in the Appearance configuration page added in Jenkins 2.421. This allows attackers with Overall/Manage permission to modify Appearance configuration options they...

OS command injection vulnerability on agents in tics

tics 2025.1.1 and earlier does not correctly escape build environment variable values when constructing the OS command it executes. This allows attackers able to control build environment variable values to execute arbitrary commands on the agent running the build. tics 2026.1.0 correctly escapes...

CSRF vulnerability in octoperf

octoperf 4.5.0 and earlier does not require POST requests for a connection test HTTP endpoint, resulting in a cross-site request forgery CSRF vulnerability. This vulnerability allows attackers to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through anothe...

Open redirect vulnerability in google-login

google-login 1.4 through 1.6 both inclusive improperly determines that a redirect URL after login is legitimately pointing to Jenkins. This allows attackers to perform phishing attacks by having users go to a Jenkins URL that will forward them to a different site after successful authentication...

Stored XSS vulnerability in spring-config

spring-config 2.0.0 and earlier does not escape build display names shown on the Spring Config view. This results in a stored cross-site scripting XSS vulnerability exploitable by attackers able to change build display names. spring-config 2.0.1 escapes build display names shown on the Spring...

Stored XSS vulnerability in junit

junit 1159.v0b396e1e07dd and earlier converts HTTPS URLs in test report output to clickable links. This is done in an unsafe manner, resulting in a stored cross-site scripting XSS vulnerability exploitable by attackers with Item/Configure permission. junit 1160.vf1f01aaeab7f no longer converts UR...

XXE vulnerability in repo

repo 1.15.0 and earlier does not configure its XML parser to prevent XML external entity XXE attacks. This allows attackers able to control which repo binary is executed on agents to have Jenkins parse a crafted XML document that uses external entities for extraction of secrets from the Jenkins...

Missing permission check in android-signing allows listing workspace contents

android-signing 2.2.5 and earlier does not perform a permission check in a method implementing form validation. This allows attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents. A...

CSRF vulnerability and missing permission check in openshift-deployer

openshift-deployer 1.2.0 and earlier does not perform permission checks in methods implementing form validation. This allows attackers with Overall/Read permission to check for the existence of an attacker-specified file path on the Jenkins controller file system and to upload a SSH key file from...

Agent-to-controller security bypass in compuware-zadviser-api

compuware-zadviser-api defines a controller/agent message that retrieves Java system properties. compuware-zadviser-api 1.0.3 and earlier does not restrict execution of the controller/agent message to agents. This allows attackers able to control agent processes to retrieve Java system properties...

Stored XSS vulnerability in maven-metadata-plugin

maven-metadata-plugin 2.2 and earlier does not perform URL validation for the Repository Base URL of List maven artifact versions parameters. This results in a stored cross-site scripting XSS vulnerability exploitable by attackers with Item/Configure permission. As of publication of this advisory...

CSRF vulnerability and missing permission checks in easyqa

easyqa 1.0 and earlier does not perform a permission check in a method implementing form validation. This allows attackers with Overall/Read permission to connect to an attacker-specified HTTP server. Additionally, this form validation method does not require POST requests, resulting in a...

User-scoped credentials exposed to other users by blueocean-pipeline-scm-api

When pipelines are created using the pipeline creation wizard in Blue Ocean, the credentials used are stored in the per-user credentials store of the user creating the pipeline. To allow pipelines to use this credential to scan repositories and checkout from SCM, the Blue Ocean Credentials Provid...

Missing permission check in gitlab-plugin allows enumerating credentials IDs

gitlab-plugin 1.5.31 and earlier does not perform a permission check in an HTTP endpoint. This allows attackers with Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins. Those can be used as part of an attack to capture the credentials using another vulnerability...

Credentials transmitted in plain text by deployhub

deployhub stores credentials in job config.xml files as part of its configuration. While the credentials are stored encrypted on disk, they are transmitted in plain text as part of the configuration form by deployhub 8.0.14 and earlier. These credentials could be viewed by users with Extended Rea...

SCTMExecutor stores credentials in plain text

SCTMExecutor 2.2 and earlier stores Silk Central credentials in the global Jenkins configuration and in job config.xml files. While these credentials are stored encrypted on disk, they are transmitted in plain text as part of the configuration form. This can result in exposure of these credential...

azure-event-grid-notifier stores credentials in plain text

azure-event-grid-notifier stores the Azure Event Grid secret key unencrypted in job config.xml files on the Jenkins controller. This key can be viewed by users with Extended Read permission, or access to the Jenkins controller file system. As of publication of this advisory, there is no fix...

bugzilla stores credentials in plain text

bugzilla stores credentials unencrypted in its global configuration file hudson.plugins.bugzilla.BugzillaProjectProperty.xml on the Jenkins controller. These credentials can be viewed by users with access to the Jenkins controller file system...

Sandbox Bypasses in Script Security Plugin

The previously implemented script security sandbox protections prohibiting the use of unsafe AST transforming annotations such as @Grab 2019-01-08 fix for SECURITY-1266 could be circumvented through use of various Groovy language features: Use of AnnotationCollector Import aliasing Referencing...

Path traversal vulnerability in Stapler allowed accessing internal data

A path traversal vulnerability in Stapler allowed viewing routable objects with views defined on any type. This could be used to access internal data of routable objects, commonly by showing their string representation toString...

Ephemeral user record was created on some invalid authentication attempts

When attempting to authenticate using API token, an ephemeral user record was created to validate the token in case an external security realm was used, and the user record in Jenkins not previously saved, as legacy API tokens could exist without a persisted user record. This behavior could be...

TOCTOU race condition in script-security

script-security allows Groovy scripts to load classpath entries from JAR files, specified either by file path or by URL, which administrators must approve before any script is allowed to use them. script-security 1415.v9af9b3ac253d and earlier downloads a JAR file specified by URL twice when a...

Tokens stored in plain text by Parameterized-Remote-Trigger

Parameterized-Remote-Trigger 3.2.2 and earlier stores tokens unencrypted in job config.xml files on the Jenkins controller as part of its configuration. These tokens can be viewed by users with Item/Extended Read permission or access to the Jenkins controller file system. As of publication of thi...

Sandbox bypass vulnerability in script-security

script-security provides a sandbox feature that allows running user-provided scripts safely by intercepting and checking potentially unsafe operations. Groovy allows an existing class to be extended at runtime with additional methods. script-security 1415.v9af9b3ac253d and earlier does not check...

Stored XSS vulnerability in gitee

gitee 1301.v8957053c7902 and earlier does not escape the sender name from Gitee push webhook payloads in build causes. This results in a stored cross-site scripting XSS vulnerability exploitable by attackers able to trigger builds via the gitee webhook endpoint. gitee 1304.v2702f1d71cde escapes t...

Stored XSS vulnerability in coverage

coverage uses coverage results IDs to create the links to coverage results on the Jenkins UI. coverage 3.3358.v9487dde48783 and earlier does not validate the coverage results ID when a job configuration is submitted through the REST API. This allows attackers with Item/Configure permission to use...