CVE-2025-12653

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-12653
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12653.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-12653
Aliases
Published
2025-11-26T19:46:12.641Z
Modified
2025-12-11T03:25:47.115233Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Authentication Bypass by Spoofing in GitLab
Details

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that under specific conditions could have allowed an unauthenticated user to join arbitrary organizations by changing headers on some requests.

Database specific 
{
    "cwe_ids": [
        "CWE-290"
    ],
    "cna_assigner": "GitLab",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12653.json"
}
References

Affected packages

Git / gitlab.com/gitlab-org/gitlab

Affected ranges

Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
94282cd9b41643ecd8a82da6cf46834cd9609afe
Fixed
29565f0ad20c935699cba03aea0e65a7db0a1131
Database specific 
{
    "versions": [
        {
            "introduced": "18.3"
        },
        {
            "fixed": "18.4.5"
        }
    ]
}
Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
37cc4da7158316bb9b204cef9b056f16fff1df32
Fixed
37d9b316e5414077656f5fc6ac4483424b41b811
Database specific 
{
    "versions": [
        {
            "introduced": "18.5"
        },
        {
            "fixed": "18.5.3"
        }
    ]
}
Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
5927b4ad8ecf8b257f14761954d6e25858a3dc33
Fixed
6e920e06fbf83bf8863fc3e9c3de05ef1f91d773
Database specific 
{
    "versions": [
        {
            "introduced": "18.6"
        },
        {
            "fixed": "18.6.1"
        }
    ]
}

Affected versions

v18.*

v18.5.0-ee
v18.5.1-ee
v18.5.2-ee
v18.6.0-ee