CVE-2026-0595
HTML Injection in GitLab Allows Unauthorized Email Addition
Publication date: 2026-02-11
Last updated on: 2026-02-12
Assigner: GitLab Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
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 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
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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.