CVE-2026-0595

Analyzed Analyzed - Analysis Complete

HTML Injection in GitLab Allows Unauthorized Email Addition

Publication date: 2026-02-11

Last updated on: 2026-02-12

Assigner: GitLab Inc.

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.9 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that, under certain conditions could have allowed an authenticated user to add unauthorized email addresses to victim accounts through HTML injection in test case titles.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-02-11

Last Modified

2026-02-12

Generated

2026-07-06

AI Q&A

2026-02-11

EPSS Evaluated

2026-07-04

NVD

CVE-2026-0595

EUVD

EUVD-2026-6217

Affected Vendors & Products

Vendor	Product	Version / Range
gitlab	gitlab	From 18.7.0 (inc) to 18.7.4 (exc)
gitlab	gitlab	From 18.8.0 (inc) to 18.8.4 (exc)
gitlab	gitlab	From 18.7.0 (inc) to 18.7.4 (exc)
gitlab	gitlab	From 18.8.0 (inc) to 18.8.4 (exc)
gitlab	gitlab	From 13.9.0 (inc) to 18.6.6 (exc)
gitlab	gitlab	From 13.9.0 (inc) to 18.6.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability in GitLab CE/EE affects versions from 13.9 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4. Under certain conditions, an authenticated user could exploit HTML injection in test case titles to add unauthorized email addresses to victim accounts.

Impact Analysis

The vulnerability allows an authenticated user to add unauthorized email addresses to other users' accounts. This could lead to unauthorized access or manipulation of account-related communications, potentially compromising account integrity and user privacy.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade GitLab CE/EE to a fixed version. Specifically, update to version 18.6.6 or later if you are using the 18.6 branch, 18.7.4 or later if using the 18.7 branch, or 18.8.4 or later if using the 18.8 branch.

This will prevent authenticated users from exploiting the HTML injection vulnerability that could allow unauthorized addition of email addresses to victim accounts.

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