GitLabApplication
CVE-2026-1500
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 · uneditedGitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user to cause denial of service due to uncontrolled resource consumption when processing a specially crafted file upload.
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 confidenceAn authenticated user can cause denial of service through uncontrolled resource consumption when uploading a specially crafted file in affected GitLab CE/EE versions (17.10 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2). The vulnerability exists in the file upload processing component.
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
>= 17.10.0, < 18.10.8>= 18.11.0, < 18.11.5>= 19.0.0, < 19.0.2CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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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Identify GitLab versionRun `sudo gitlab-rake gitlab:version` or check the GitLab admin dashboard under the Help > Version sectionAffected if The installed version falls within 17.10.0 to 18.10.7, 18.11.0 to 18.11.4, or 19.0.0 to 19.0.1
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Confirm file upload feature is accessibleVerify that the file upload functionality is enabled in the GitLab instance for authenticated users through admin settings or by attempting a test uploadAffected if File uploads are permitted for authenticated users on the instance
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Verify user authentication is enabledCheck that the GitLab instance has user registration or invitation functionality active, allowing authenticated users to access the systemAffected if The instance accepts authenticated users who can access file upload features
The environment is affected if GitLab is running a version within 17.10.0-18.10.7, 18.11.0-18.11.4, or 19.0.0-19.0.1 AND authenticated users can access file upload functionality.
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 · scoped18.10.818.11.519.0.2
Upgrade GitLab to version 18.10.8, 18.11.5, or 19.0.2 or later to remediate this vulnerability. Test file upload functionality after upgrade to confirm the fix.
Upgrade to GitLab 18.10.8, 18.11.5, or 19.0.2 (or later respective versions)
- Back up your GitLab instance data and configuration before starting the upgrade
- Review the GitLab upgrade documentation and release notes for your target version
- Plan maintenance window as upgrade may require downtime
- For GitLab installations using package manager (Omnibus), run: sudo gitlab-ctl stop && sudo gitlab-rake gitlab:backup:create
- Upgrade to version 18.10.8 or later (if currently on 17.10.x-18.10.x), OR upgrade to version 18.11.5 or later (if currently on 18.11.x), OR upgrade to version 19.0.2 or later (if currently on 19.0.x)
- For Omnibus: sudo apt-get update && sudo apt-get install gitlab-ce (or gitlab-ee) or use sudo gitlab-rake gitlab:upgrade:check
- After upgrade, run: sudo gitlab-ctl start && sudo gitlab-rake gitlab:check
- Verify GitLab is functioning correctly and the version matches the expected fixed release
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
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-1500 — 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-2026-1500 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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- 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