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CVE-2023-5933

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLab

MEDIUM
5.4
CVSS Score
Published: January 26, 2024 at 01:02 AM UTC
Updated: June 17, 2026 at 06:49 AM UTC
1 product affected across 1 vendorGitLab

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.7%
SSVC
PoC

Description

An issue has been discovered in GitLab CE/EE affecting all versions after 13.7 before 16.6.6, 16.7 prior to 16.7.4, and 16.8 prior to 16.8.1. Improper input sanitization of user name allows arbitrary API PUT requests.

Affected

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

GitLab· GitLabmaven
95%
13.7 ≤ v < 16.6.613.7.0 ≤ v < 16.6.616.7 ≤ v < 16.7.416.7.0 ≤ v < 16.7.416.8 ≤ v < 16.8.113.716.716.816.8.0
Affected range stops below 16.6.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.7.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.8.1, 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 (3)

Vendor Advisory
Source: [email protected]
https://about.gitlab.com/releases/2024/01/25/critical-security-release-gitlab-16-8-1-released/
Issue TrackingPermissions RequiredBroken Link
Source: [email protected]
https://gitlab.com/gitlab-org/gitlab/-/issues/430236
Technical DescriptionExploitPermissions Required
Source: [email protected]
https://hackerone.com/reports/2225710

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

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

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-80CWE-79

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