HTML Injection Vulnerability in GitLab CE/EE Affects Multiple Versions
CVE-2026-0595

7.3HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
11 February 2026

What is CVE-2026-0595?

An HTML injection vulnerability has been identified in GitLab CE/EE, affecting several versions from 13.9 to 18.8.4. This issue arises when an authenticated user is able to add unauthorized email addresses to victim accounts through manipulated test case titles. This can lead to security implications by allowing attackers to compromise user account integrity. GitLab has since released patches to remediate this vulnerability in affected versions.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

GitLab 13.9 < 18.6.6

GitLab 18.7 < 18.7.4

GitLab 18.8 < 18.8.4

References

https://gitlab.com/gitlab-org/gitlab/-/issues/584975
issue-trackingpermissions-required
https://hackerone.com/reports/3486862
technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/02/10/patch-releas...

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [joaxcar](https://hackerone.com/joaxcar) for reporting this vulnerability through our HackerOne bug bounty program
JSON
.