CVE-2019-6788

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-09-09 · updated 2026-06-17

Description

An issue was discovered in GitLab Community and Enterprise Edition before 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1. It allows Information Disclosure (issue 3 of 6). For installations using GitHub or Bitbucket OAuth integrations, it is possible to use a covert redirect to obtain the user OAuth token for those services.

Affected products

GitLab: from 8.4.0 before 11.5.8; from 11.6.0 before 11.6.6; from 11.7.0 before 11.7.1 — fixed in 11.5.8, 11.6.6, 11.7.1

How to fix

Upgrade to a fixed version: GitLab 11.5.8, 11.6.6, 11.7.1. Check the vendor advisory for mitigations.

References

https://about.gitlab.com/2019/01/31/security-release-gitlab-11-dot-7-dot-3-released/
https://gitlab.com/gitlab-org/gitlab-ce/issues/56663
https://about.gitlab.com/2019/01/31/security-release-gitlab-11-dot-7-dot-3-released/
https://gitlab.com/gitlab-org/gitlab-ce/issues/56663

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