CVE-2018-20500 Missing authorization in n/a
Attackers with knowledge of a runner registration token can maintain unauthorized access to CI/CD pipelines even after a maintainer leaves the group.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-20500?
CVE-2018-20500 is a high-severity missing authorization vulnerability in Gitlab Gitlab, published on 17 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An insecure permissions issue was discovered in GitLab Community and Enterprise Edition 9.4 and later but before 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1. The runner registration token in the CI/CD settings could not be reset. This was a security risk if one of the maintainers leaves the group and they know the token.
Weakness: CWE-732
Which versions are affected by CVE-2018-20500?
It affects 1 product.
Products include Gitlab Gitlab.
How do I fix CVE-2018-20500?
No fix has been published for CVE-2018-20500 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2018-20500 being exploited?
There is no known exploitation of CVE-2018-20500 in the wild and no public exploit code.
Other vulnerabilities in Gitlab Gitlab
- CVE-2026-97229 GitLab Community Edition and Enterprise Edition Integer Overflow or Wraparound
- CVE-2026-85706 GitLab Community Edition and Enterprise Edition Path Traversal
- CVE-2023-7028 GitLab Community and Enterprise Editions Improper Access Control
- CVE-2021-22205 GitLab Community and Enterprise Editions Remote Code Execution
- CVE-2021-39935 GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF)
Sources
Also known as GHSA-fp7j-v353-cf72.