CVE-2019-5466 Information disclosure in GitLab CE/EE
Medium 4.3
Published
Updated
Check this codebase for CVE-2019-5466 and fix it if it is affected.
What it is: CVE-2019-5466 is a medium-severity vulnerability in Gitlab Gitlab, published on 28 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-5466 in the wild and no public exploit code.
Affected product: Gitlab Gitlab. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2019-5466/ (Markdown: https://insights.sbomify.com/CVE-2019-5466/index.md)
An Insecure Direct Object Reference in GitLab allows attackers to disclose label names via the new merge requests endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-5466?
CVE-2019-5466 is a medium-severity vulnerability in Gitlab Gitlab, published on 28 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An IDOR was discovered in GitLab CE/EE 11.5 and later that allowed new merge requests endpoint to disclose label names.
Weakness: CWE-639
Which versions are affected by CVE-2019-5466?
It affects 1 product.
Products include Gitlab Gitlab.
How do I fix CVE-2019-5466?
No fix has been published for CVE-2019-5466 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-5466 being exploited?
There is no known exploitation of CVE-2019-5466 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-8c93-42cq-rfjj.