GoCD is a continuous delivery server. GoCD helps you automate and streamline the build-test-release cycle for continuous delivery of your product. GoCD versions from 19.2.0 to 19.10.0 (inclusive) are subject to a timing attack in validation of access tokens due to use of regular string comparison for validation of the token rather than a constant time algorithm. This could allow a brute force attack on GoCD server API calls to observe timing differences in validations in order to guess an access token generated by a user for API access. This issue is fixed in GoCD version 19.11.0. As a workaround, users can apply rate limiting or insert random delays to API calls made to GoCD Server via a reverse proxy or other fronting web server. Another workaround, users may disallow use of access tokens by users by having an administrator revoke all access tokens through the "Access Token Management" admin function.

GoCD is a continuous delivery server. Windows installations via either the server or agent installers for GoCD prior to 22.2.0 do not adequately restrict permissions when installing outside of the default location. This could allow a malicious user with local access to the server GoCD Server or Agent are installed on to modify executables or components of the installation. This does not affect zip file-based installs, installations to other platforms, or installations inside `Program Files` or `Program Files (x86)`. This issue is fixed in GoCD 22.2.0 installers. As a workaround, if the server or agent is installed outside of `Program Files (x86)`, verify the the permission of the Server or Agent installation directory to ensure the `Everyone` user group does not have `Full Control`, `Modify` or `Write` permissions.

GoCD is a continuous delivery server. In GoCD versions prior to 22.1.0, it is possible for existing authenticated users who have permissions to edit or create pipeline materials or pipeline configuration repositories to get remote code execution capability on the GoCD server via configuring a malicious branch name which abuses Mercurial hooks/aliases to exploit a command injection weakness. An attacker would require access to an account with existing GoCD administration permissions to either create/edit (`hg`-based) configuration repositories; create/edit pipelines and their (`hg`-based) materials; or, where "pipelines-as-code" configuration repositories are used, to commit malicious configuration to such an external repository which will be automatically parsed into a pipeline configuration and (`hg`) material definition by the GoCD server. This issue is fixed in GoCD 22.1.0. As a workaround, users who do not use/rely upon Mercurial materials can uninstall/remove the `hg`/Mercurial b…

GoCD is a continuous delivery server. GoCD versions 20.2.0 until 21.4.0 are vulnerable to reflected cross-site scripting via abuse of the pipeline comparison function's error handling to render arbitrary HTML into the returned page. This could allow an attacker to trick a victim into executing code which would allow the attacker to operate on, or gain control over the same resources as the victim had access to. This issue is fixed in GoCD 21.4.0. As a workaround, block access to `/go/compare/.*` prior to GoCD Server via a reverse proxy, web application firewall or equivalent, which would prevent use of the pipeline comparison function.

GoCD is a continuous delivery server. GoCD versions 19.11.0 through 21.4.0 (inclusive) are vulnerable to a Document Object Model (DOM)-based cross-site scripting attack via a pipeline run's Stage Details > Graphs tab. It is possible for a malicious script on a attacker-hosted site to execute script that will run within the user's browser context and GoCD session via abuse of a messaging channel used for communication between with the parent page and the stage details graph's iframe. This could allow an attacker to steal a GoCD user's session cookies and/or execute malicious code in the user's context. This issue is fixed in GoCD 22.1.0. There are currently no known workarounds.

An issue was discovered in ThoughtWorks GoCD before 21.3.0. An attacker who has compromised a GoCD agent can upload a malicious file into a directory of a GoCD server. They can control the filename but the directory is placed inside of a directory that they can't control.

An issue was discovered in ThoughtWorks GoCD before 21.3.0. An attacker who has compromised a GoCD agent can upload a malicious file into an arbitrary directory of a GoCD server, but does not control the filename.

An issue was discovered in ThoughtWorks GoCD before 21.3.0. An attacker in control of a GoCD Agent can plant malicious JavaScript into a failed Job Report.

An issue was discovered in ThoughtWorks GoCD before 21.3.0. An attacker with privileges to create a new pipeline on a GoCD server can abuse a command-line injection in the Git URL "Test Connection" feature to execute arbitrary code.

An issue was discovered in ThoughtWorks GoCD before 21.3.0. The business continuity add-on, which is enabled by default, leaks all secrets known to the GoCD server to unauthenticated attackers.