CVE-2026-6335

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Source
https://cve.org/CVERecord?id=CVE-2026-6335
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6335.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-6335
Aliases
Downstream
Published
2026-05-14T05:33:57Z
Modified
2026-08-27T11:30:33Z
Severity
  • 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
Summary
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
Details

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.3 that under certain conditions could have allowed an authenticated user to execute arbitrary code in another user's browser session due to improper sanitization.

Database specific 
{
    "cna_assigner": "GitLab",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6335.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "18.11"
                },
                {
                    "fixed": "18.11.3"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "18.11"
                },
                {
                    "fixed": "18.11.3"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / gitlab.com/gitlab-org/gitlab

Affected ranges

Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
1060c7b0ff78be7c8abe8fd6d23dcb1ca493fd78
Fixed
daa4145c8330213081c57260b569539e3b157b87
Database specific
Show details 
{
    "cpe": [
        "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
        "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "18.11.0"
        },
        {
            "fixed": "18.11.3"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

v18.*
v18.11.0-ee
v18.11.2-ee

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6335.json"