GitLabApplication
CVE-2023-3917
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedDenial of Service in pipelines affecting all versions of Gitlab EE and CE prior to 16.2.8, 16.3 prior to 16.3.5, and 16.4 prior to 16.4.1 allows attacker to cause pipelines to fail.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA denial-of-service vulnerability in GitLab CI/CD pipelines allows an attacker to cause pipeline executions to fail. The vulnerability affects GitLab Community Edition (CE) and Enterprise Edition (EE) across multiple version branches, potentially enabling unauthenticated or authenticated attackers to disrupt CI/CD workflows.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
GitLabApplication
< 16.2.8>= 16.3.0, < 16.3.5= 16.4.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm GitLab installationAccess the GitLab admin interface or check the server for GitLab packages. The application typically runs on standard web ports and shows a GitLab login page.Affected if The system is running GitLab CE or EE
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Identify the installed GitLab versionNavigate to the Admin Area > Dashboard in the GitLab UI, or check the version file on the server (e.g., /opt/gitlab/version or via gitlab-rake gitlab:env:info), or use the /help page on self-hosted instances.Affected if The version cannot be determined or shows a version below the fixed releases
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Compare version against affected rangesReview the installed version against: < 16.2.8, >= 16.3.0 and < 16.3.5, or exactly 16.4.0. These specific ranges indicate vulnerability to CVE-2023-3917.Affected if The installed version matches any of the affected ranges listed
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Verify CI/CD pipeline functionality is in useCheck if any projects have .gitlab-ci.yml files configured, or if pipeline schedules or triggers are active. This can be done via the CI/CD settings in project repositories.Affected if CI/CD pipelines are configured and the GitLab version is within the affected ranges
A user is affected if they are running a GitLab version that is 16.2.7 or lower, between 16.3.0 and 16.3.4 inclusive, or exactly 16.4.0, AND they have CI/CD pipelines enabled in their environment.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped16.2.816.3.5
Upgrade GitLab to version 16.2.8, 16.3.5, or 16.4.1 or later to patch the pipeline DoS vulnerability.
16.4.1 (or latest stable 16.4.x release)
- Identify current GitLab version by checking the GitLab administration panel or running `gitlab-rake gitlab:env:info`
- Plan upgrade following GitLab's standard upgrade path documentation (upgrade to next minor version sequentially)
- For versions < 16.2.8: upgrade directly to 16.2.8 or later
- For versions >= 16.3.0 and < 16.3.5: upgrade to 16.3.5 or later
- For version 16.4.0: upgrade to 16.4.1 or later
- Back up GitLab database and repositories before upgrading
- Execute upgrade following GitLab upgrade documentation for your deployment method (package manager, source, etc.)
- Verify upgrade successful by checking GitLab version after completion
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in GitLab
Scoped from the published advisory
- Consultation2.0 h
- Implementation3.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-3917 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-3917 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data