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CVE-2026-84284

Incorrect Authorization in GitLab

MEDIUM
5.3
CVSS Score
Published: October 13, 2026 at 01:06 AM UTC
Updated: October 22, 2026 at 12:16 PM UTC
1 product affected across 1 vendorGitLab

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.11 before 19.2.8, all 19.3 versions, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an unauthenticated user to read work item contents from private groups and projects due to incorrect authorization checks.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

GitLab· GitLabmaven
95%
17.11.0 ≤ v < 19.2.819.3.0 ≤ v < 19.4.217.1119.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Issue Tracking
Source: cverecord
https://gitlab.com/gitlab-org/gitlab/-/work_items/627167
Technical DescriptionExploitPermissions Required
Source: cverecord
https://hackerone.com/reports/3551698
Release NotesVendor Advisory
Source: cverecord
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMGitLab
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-863

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