EUVD-2026-50476
GHSA-x55f-grmq-xwwm
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable, unauthenticated availability-only DoS, but vendor's 'under certain conditions' qualifier justifies AC:H rather than AC:L; no confidentiality or integrity impact.
Primary rating from Vendor (GitLab).
CVSS VectorVendor: GitLab
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
3DescriptionCVE.org
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.8 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an unauthenticated user to cause a denial of service due to insufficient resource throttling when processing merge request discussions.
Articles & Coverage 2
AnalysisAI
Denial of service in GitLab CE/EE (all versions from 11.8 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1) allows an unauthenticated attacker to exhaust server resources through insufficient throttling when the application processes merge request discussions. Vendor-reported by GitLab with no public exploit identified at time of analysis; the availability-only impact (CVSS 7.5, A:H) reflects service disruption rather than data compromise. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The vulnerable operation is the processing of merge request discussions, where insufficient resource throttling (CWE-770) permits unbounded consumption. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) rates this 7.5 High, driven entirely by availability impact with a network vector, low complexity, and no privileges or user interaction. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with only network reachability to a GitLab instance repeatedly sends requests that drive the merge request discussion processing path, and because that path lacks resource throttling, the server's CPU or memory is exhausted and legitimate users experience degraded or unavailable service. Given AV:N/AC:L/PR:N, the requests require no login or user interaction in the affected configuration, though the vendor notes exploitation only succeeds 'under certain conditions.' No public POC is known at time of analysis. |
| Remediation | Vendor-released patch: upgrade to GitLab 19.0.5, 19.1.3, or 19.2.1 (or later) depending on your current branch, per the GitLab patch release advisory (https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all GitLab deployments and identify instances running affected versions (11.8-19.0.4, 19.1.0-19.1.2, 19.2.0). …
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Same technique Denial Of Service
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External POC / Exploit Code
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