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CVE-2023-4658

Incorrect Authorization in GitLab

LOW
3.1
CVSS Score
Published: December 1, 2023 at 07:01 AM UTC
Updated: June 17, 2026 at 06:38 AM UTC
1 product affected across 1 vendorGitLab

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Severity
LOW3.1
Exploit prediction
EPSS 0.5%

Description

An issue has been discovered in GitLab EE affecting all versions starting from 8.13 before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. It was possible for an attacker to abuse the `Allowed to merge` permission as a guest user, when granted the permission through a group.

Affected

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

GitLab· GitLabmaven
95%
16.5 ≤ v < 16.5.316.5.0 ≤ v < 16.5.316.6 ≤ v < 16.6.18.13 ≤ v < 16.4.38.13.0 ≤ v < 16.4.316.516.616.6.08.13
Affected range stops below 16.4.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.6.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

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

Patch and advisory references

References (2)

Issue TrackingPermissions RequiredBroken LinkVendor Advisory
Source: [email protected]
https://gitlab.com/gitlab-org/gitlab/-/issues/423835
Technical DescriptionExploitPermissions RequiredThird Party Advisory
Source: [email protected]
https://hackerone.com/reports/2104540

CVSS

3.1LOWGitLab
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-863NVD-CWE-noinfo

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