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CVE-2023-6033

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

MEDIUM
5.4
CVSS Score
Published: December 1, 2023 at 07:01 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 0.6%
SSVC
No known exploit

Description

Improper neutralization of input in Jira integration configuration in GitLab CE/EE, affecting all versions from 15.10 prior to 16.6.1, 16.5 prior to 16.5.3, and 16.4 prior to 16.4.3 allows attacker to execute javascript in victim's browser.

Affected

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

GitLab· GitLabmaven
95%
15.10 ≤ v < 16.4.315.10 ≤ v < 16.6.116.4.0 ≤ v < 16.4.316.5 ≤ v < 16.5.316.5.0 ≤ v < 16.5.316.6 ≤ v < 16.6.115.1016.516.6
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/431201
Technical DescriptionExploitPermissions RequiredThird Party Advisory
Source: [email protected]
https://hackerone.com/reports/2236039

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial 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-79

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