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CVE-2023-3907

Improper User Management in GitLab

HIGH
8.8
CVSS Score
Published: December 17, 2023 at 11:02 PM UTC
Updated: June 17, 2026 at 06:15 AM UTC
1 product affected across 1 vendorGitLab

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Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

A privilege escalation vulnerability in GitLab EE affecting all versions from 16.0 prior to 16.4.4, 16.5 prior to 16.5.4, and 16.6 prior to 16.6.2 allows a project Maintainer to use a Project Access Token to escalate their role to Owner

Affected

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

GitLab· GitLabmaven
95%
16.0 ≤ v < 16.4.416.0.0 ≤ v < 16.4.416.5 ≤ v < 16.5.416.6 ≤ v < 16.6.216.016.516.6
Affected range stops below 16.4.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.5.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.6.2, 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 TrackingVendor Advisory
Source: [email protected]
https://gitlab.com/gitlab-org/gitlab/-/issues/418878
Technical DescriptionExploitPermissions Required
Source: [email protected]
https://hackerone.com/reports/2058934

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-286NVD-CWE-Other

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