CVE-2026-5816

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-5816
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5816.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-5816
Aliases
Published
2026-04-22T16:04:26Z
Modified
2026-08-27T11:30:47Z
Severity
  • 8.0 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N CVSS Calculator
Summary
Improper Resolution of Path Equivalence in GitLab
Details

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.10.4 and 18.11 before 18.11.1 that could have allowed an unauthenticated user to execute arbitrary JavaScript in a user's browser session due to improper path validation under certain conditions.

Database specific 
{
    "cna_assigner": "GitLab",
    "cwe_ids": [
        "CWE-41"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5816.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "18.10"
                },
                {
                    "fixed": "18.10.4"
                },
                {
                    "introduced": "18.11"
                },
                {
                    "fixed": "18.11.1"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "18.10"
                },
                {
                    "fixed": "18.10.4"
                },
                {
                    "introduced": "18.11"
                },
                {
                    "fixed": "18.11.1"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / gitlab.com/gitlab-org/gitlab

Affected ranges

Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
57c08314af5bc8f317b1967330f92ed029e2c628
Fixed
2c4a87e00b3f5ab1eab353136020dfcab34ae6ca
Introduced
1060c7b0ff78be7c8abe8fd6d23dcb1ca493fd78
Last Affected
1060c7b0ff78be7c8abe8fd6d23dcb1ca493fd78
Database specific
Show details 
{
    "cpe": [
        "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
        "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
        "cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:*",
        "cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:enterprise:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "18.10.0"
        },
        {
            "fixed": "18.10.4"
        },
        {
            "introduced": "18.11.0"
        },
        {
            "last_affected": "18.11.0"
        }
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ]
}

Affected versions

18.*
18.11.0
v18.*
v18.10.0-ee
v18.10.2-ee
v18.11.0-ee

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5816.json"