An issue was discovered in GitLab Community and Enterprise Edition 11.11 through 12.0.2. When an admin enabled one of the service templates, it was triggering an action that leads to resource depletion. It allows Uncontrolled Resource Consumption.

Certain SAST CiConfiguration information could be viewed by unauthorized users in GitLab EE starting with 13.3. This information was exposed through GraphQL to non-members of public projects with repository visibility restricted as well as guest members on private projects. Affected versions are: >=13.3, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.4 prior to 16.10.7, starting from 16.11 prior to 16.11.4, and starting from 17.0 prior to 17.0.2. A vulnerability in GitLab's Asana integration allowed an attacker to potentially cause a regular expression denial of service by sending specially crafted requests.

GitLab Community and Enterprise Editions version 8.3 up to 10.x before 10.3 are vulnerable to SSRF in the Services and webhooks component.

In GitLab EE 11.7 through 12.9, the NPM feature is vulnerable to a path traversal issue.

An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.8. GitLab was not properly validating authorisation tokens which resulted in GraphQL mutation being executed.

A regular expression denial of service issue in GitLab versions 8.13 to 14.2.5, 14.3.0 to 14.3.3 and 14.4.0 could cause excessive usage of resources when a specially crafted username was used when provisioning a new user

A potential DOS vulnerability was discovered in GitLab EE starting with version 12.6 due to lack of pagination in dependencies API.

An issue has been discovered in GitLab EE affecting all versions starting from 11.6 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. It was possible for an unauthorised project or group member to read the CI/CD variables using the custom project templates.

In Gitlab EE/CE before 15.6.1, 15.5.5 and 15.4.6 using a branch with a hexadecimal name could override an existing hash.

An IDOR vulnerability exists in GitLab <v12.1.2, <v12.0.4, and <v11.11.6 that allowed uploading files from project archive to replace other users files potentially allowing an attacker to replace project binaries or other uploaded assets.

A cross-site scripting issue has been discovered in GitLab affecting all versions starting from 5.1 before 16.10.7, all versions starting from 16.11 before 16.111.4, all versions starting from 17.0 before 17.0.2. When viewing an XML file in a repository in raw mode, it can be made to render as HTML if viewed under specific circumstances.

An issue was discovered in GitLab Community and Enterprise Edition before 11.1.7, 11.2.x before 11.2.4, and 11.3.x before 11.3.1. There is stored XSS on the merge request page via project import.

An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 prior to 17.7.6, 17.8 prior to 17.8.4, and 17.9 prior to 17.9.1. A proxy feature could potentially allow unintended content rendering leading to XSS under specific circumstances.

An improper certificate validation issue in Smartcard authentication in GitLab EE affecting all versions from 11.6 prior to 16.4.4, 16.5 prior to 16.5.4, and 16.6 prior to 16.6.2 allows an attacker to authenticate as another user given their public key if they use Smartcard authentication. Smartcard authentication is an experimental feature and has to be manually enabled by an administrator.

GitLab Community and Enterprise Editions version 9.2 up to 10.4 are vulnerable to XSS because a lack of input validation in the milestones component leads to cross site scripting (specifically, data-milestone-id in the milestone dropdown feature). This is fixed in 10.6.3, 10.5.7, and 10.4.7.

GitLab Community Edition (CE) and Enterprise Edition (EE) through 12.5 has Incorrect Access Control (issue 2 of 2).

GitLab Community and Enterprise Edition before 10.7.7, 10.8.x before 10.8.6, and 11.x before 11.0.4 allows Directory Traversal with write access and resultant remote code execution via the GitLab projects import component.

An issue was discovered in GitLab Community and Enterprise Edition before 11.1.7, 11.2.x before 11.2.4, and 11.3.x before 11.3.1. The diff formatter using rouge can block for a long time in Sidekiq jobs without any timeout.

In all versions of GitLab CE/EE since version 10.6, a project export leaks the external webhook token value which may allow access to the project which it was exported from.