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CVE-2026-3254
Published: Apr 22, 2026
Modified: Apr 22, 2026
PUBLISHED
CVSS v3.1
3.5
LOW
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to load unauthorized content into another user's browser due to improper input validation in the Mermaid sandbox.
| Vendor | Product | Versions |
|---|---|---|
GitLab | GitLab | affected 18.11 - < 18.11.1 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
References
HackerOne Bug Bounty Report #3572752
technical-description
exploit
permissions-required
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