CVE-2017-0926 Auth bypass in GitLab Community and Enterprise Editions

What is CVE-2017-0926?

CVE-2017-0926 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 21 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Gitlab Community Edition version 10.3 is vulnerable to an improper authorization issue in the Oauth sign-in component resulting in unauthorized user login.

Weakness: CWE-863, CWE-285

Which versions are affected by CVE-2017-0926?

It affects 2 products.

Products include Debian Debian Linux, Gitlab Gitlab.

How do I fix CVE-2017-0926?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2017-0926 being exploited?

There is no known exploitation of CVE-2017-0926 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-64x3-qr9c-w6jw.