CVE-2026-19619

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

MEDIUM
4.7
CVSS Score
Published: September 16, 2026 at 06:33 AM UTC
Updated: September 28, 2026 at 03:21 PM UTC
1 product affected across 1 vendorGitLab

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Severity
MEDIUM4.7
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an unauthenticated user to execute arbitrary JavaScript in the context of a targeted user's session due to improper sanitization of pasted HTML content in the Content Editor.

Affected

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

19.0 ≤ v < 19.1.819.0.0 ≤ v < 19.1.819.2 ≤ v < 19.2.619.2.0 ≤ v < 19.2.619.3 ≤ v < 19.3.219.3.0 ≤ v < 19.3.219.019.219.3
Affected range stops below 19.1.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 19.2.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 19.3.2, 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:

References (3)

Technical DescriptionExploitPermissions Required
Source: cverecord
https://hackerone.com/reports/3808840

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

4.7MEDIUMGitLab
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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