CVE-2026-18252

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Source
https://cve.org/CVERecord?id=CVE-2026-18252
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18252.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-18252
Aliases
Downstream
Published
2026-08-26T13:36:00.100Z
Modified
2026-09-02T03:48:37.214550600Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Inclusion of Functionality from Untrusted Control Sphere in GitLab
Details

GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with developer-role permissions could have executed arbitrary commands in a CI context, due to the Claude agent processing configuration from a user-controlled source.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18252.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "18.9"
                },
                {
                    "fixed": "19.1.7"
                },
                {
                    "introduced": "19.2"
                },
                {
                    "fixed": "19.2.5"
                },
                {
                    "introduced": "19.3"
                },
                {
                    "fixed": "19.3.1"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "introduced": "18.9"
                },
                {
                    "fixed": "19.1.7"
                },
                {
                    "introduced": "19.2"
                },
                {
                    "fixed": "19.2.5"
                },
                {
                    "introduced": "19.3"
                },
                {
                    "fixed": "19.3.1"
                }
            ]
        }
    ],
    "cna_assigner": "GitLab",
    "cwe_ids": [
        "CWE-829"
    ]
}
References

Affected packages

Git / gitlab.com/gitlab-org/gitlab

Affected ranges

Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
20fe49b575fedd2b8cadc2c0640178879854aeb3
Fixed
23b2045861177bbf757b871b586c9484417efd4b
Introduced
68485a1eb627c9a992f266263157327649822db3
Fixed
9ec1fc106b0569dae500ceedba261cf24235d37f
Introduced
8f83039bebbbb61d3b7b8b7e2342d1deec1e14c6
Last affected
8f83039bebbbb61d3b7b8b7e2342d1deec1e14c6
Database specific
Show details 
{
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ],
    "cpe": [
        "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
        "cpe:2.3:a:gitlab:gitlab:19.3.0:*:*:*:enterprise:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "18.9.0"
        },
        {
            "fixed": "19.1.7"
        },
        {
            "introduced": "19.2.0"
        },
        {
            "fixed": "19.2.5"
        },
        {
            "introduced": "19.3.0"
        },
        {
            "last_affected": "19.3.0"
        }
    ]
}

Affected versions

19.*
19.3.0
v19.*
v19.2.0-ee
v19.3.0-ee

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18252.json"