EUVD-2026-80119
GHSA-prpx-9q78-g4hg
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Authenticated low-privileged network user, no user interaction, and only the victim group's settings availability is degraded.
Primary rating from Vendor (GitLab).
CVSS VectorVendor: GitLab
Lifecycle Timeline
3DescriptionCVE.org
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.0 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an authenticated user to prevent another user from modifying their group settings due to improper validation of group URL slugs during namespace transfers.
AnalysisAI
GitLab CE/EE 13.0 and later (before 19.1.8, 19.2.6 and 19.3.2) fails to properly validate group URL slugs during namespace transfers, allowing any authenticated user to induce a slug collision that leaves the legitimate owners of another group unable to modify that group's settings. The flaw is an availability-only issue (CVSS 4.3, C:N/I:N/A:L) rather than a data-disclosure or code-execution bug, but publicly available exploit detail exists via the linked HackerOne report, and the CWE-862 classification indicates the transfer workflow bypasses the authorization checks that should protect the target namespace. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated GitLab account (CVSS PR:L) - authentication requirements are confirmed by the vector - plus the ability to create or control a group and to initiate a namespace transfer, which is standard for users permitted to manage groups in most default GitLab deployments. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L is internally consistent with the description: the attack is network-reachable, trivially automatable, requires only an ordinary authenticated account (PR:L, so authentication requirements are confirmed), needs no victim interaction, and produces a low availability impact confined to one group's settings UI. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to a patched release - GitLab 19.1.8, 19.2.6, or 19.3.2 - choosing the highest maintenance line available in your environment (vendor-released patch: 19.1.8 / 19.2.6 / 19.3.2), following the vendor guidance at https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/; because GitLab minor releases ship monthly and security fixes are backported to the current three supported lines, environments still on much older 13.x-18.x branches must plan a supported upgrade path rather than expecting a backport. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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