CVE-2026-100104 Server-Side Request Forgery (SSRF) in GitLab
Authenticated users can exploit a race condition in URL validation during repository imports to perform SSRF and access internal network resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-100104?
CVE-2026-100104 is a low-severity server-side request forgery vulnerability in Gitlab Gitlab, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.
Weakness: CWE-918
Which versions are affected by CVE-2026-100104?
1 open source package ship an affected version, including gitlab. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitlab Bitnami | From 10.3.0 | 19.2.8, 19.3.5, 19.4.2 |
Products include Gitlab Gitlab.
How do I fix CVE-2026-100104?
Upgrade gitlab to a fixed version for your release line: 19.2.8, 19.3.5 or 19.4.2.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-100104 being exploited?
There is no known exploitation of CVE-2026-100104 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 BIT-gitlab-2026-100104, GHSA-mv9g-3c33-88m6, MINI-27cq-8jh7-7fg8, MINI-27qh-h5vg-pq2w, MINI-282p-p6pv-v5cx, MINI-28f6-jqg7-fm98 and 48 more.