CVE-2026-12635

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Source
https://cve.org/CVERecord?id=CVE-2026-12635
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12635.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-12635
Aliases
Published
2026-06-25T04:33:34.156Z
Modified
2026-08-27T11:30:31.395056979Z
Severity
  • 0.0 (None) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:N CVSS Calculator
Summary
Reliance on Reverse DNS Resolution for a Security-Critical Action in GitLab
Details

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 8.3 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user with maintainer-role permissions to make requests to internal network resources through mirror synchronization due to improper URL validation.

Database specific 
{
    "cwe_ids": [
        "CWE-350"
    ],
    "cna_assigner": "GitLab",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "8.3"
                },
                {
                    "fixed": "18.11.6"
                },
                {
                    "introduced": "19.0"
                },
                {
                    "fixed": "19.0.3"
                },
                {
                    "introduced": "19.1"
                },
                {
                    "fixed": "19.1.1"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "introduced": "8.3"
                },
                {
                    "fixed": "18.11.6"
                },
                {
                    "introduced": "19.0"
                },
                {
                    "fixed": "19.0.3"
                },
                {
                    "introduced": "19.1"
                },
                {
                    "fixed": "19.1.1"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12635.json"
}
References

Affected packages

Git / gitlab.com/gitlab-org/gitlab

Affected ranges

Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
a810cc509e54b71aff30dfb9ba52ea4aea587c32
Fixed
0626dbe45d0ea9a431f494135ee4636d149eb523
Introduced
f07e3c5b3c8128be5db112e5b2b618fe31ea1b35
Fixed
e1892478cfb7980c694d13e0e5e15e129aa3d908
Introduced
67581074a0aab1f53cdafe7eead5f5d07f3afec8
Last affected
67581074a0aab1f53cdafe7eead5f5d07f3afec8
Database specific
Show details 
{
    "cpe": [
        "cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:gitlab:gitlab:19.1.0:*:*:*:*:*:*:*"
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ],
    "extracted_events": [
        {
            "introduced": "8.3.0"
        },
        {
            "fixed": "18.11.6"
        },
        {
            "introduced": "19.0.0"
        },
        {
            "fixed": "19.0.3"
        },
        {
            "introduced": "19.1.0"
        },
        {
            "last_affected": "19.1.0"
        }
    ]
}

Affected versions

19.*
19.1.0
v19.*
v19.0.0-ee
v19.1.0-ee

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12635.json"