UBUNTU-CVE-2026-1090

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Source
https://ubuntu.com/security/CVE-2026-1090
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1090.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-1090
Upstream
Published
2026-03-11T16:16:00Z
Modified
2026-03-19T08:27:44.985573Z
Severity
  • 8.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N CVSS Calculator
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.6 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user, when the markdown_placeholders feature flag was enabled, to inject JavaScript in a browser due to improper sanitization of placeholder content in markdown processing.

References

Affected packages

Ubuntu:16.04:LTS / gitlab

Package

Name
gitlab
Purl
pkg:deb/ubuntu/gitlab@8.5.8+dfsg-5?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.4.3+dfsg-9
8.4.3+dfsg-12
8.5.8+dfsg-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.5.8+dfsg-5",
            "binary_name": "gitlab"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1090.json"