High
Improperly Controlled Modification of Dynamically-Determined Object Attributes in GitLab
Type: advisorySources: OSV
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user to modify CI/CD configuration belonging to another user due to improper validation of user-supplied attributes when processing pipeline schedule inputs.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-12436
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 14:25 UTC · Revision 1
Source evidence
Improperly Controlled Modification of Dynamically-Determined Object Attributes in GitLab
core-osv · Original sourcePublished 29 Jul 2026, 19:00 UTC
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user to modify CI/CD configuration belonging to another user due to improper validation of user-supplied attributes when processing pipeline schedule inputs.
osv:CVE-2026-12436
Complete source record
{
"id": "252864661ad07a33472cfde6d0cde637cb942b7a98ff5ca8d2e396de2678bf59",
"url": "https://osv.dev/vulnerability/CVE-2026-12436",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Improperly Controlled Modification of Dynamically-Determined Object Attributes in GitLab",
"summary": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user to modify CI/CD configuration belonging to another user due to improper validation of user-supplied attributes when processing pipeline schedule inputs.",
"evidence": "osv:CVE-2026-12436",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-12436",
"aliases": [
"BIT-gitlab-2026-12436",
"CVE-2026-12436"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.com/gitlab-org/gitlab",
"type": "GIT",
"events": [
{
"introduced": "504fd9e5236e13d674e051c6b8a1e9892b371c58"
},
{
"fixed": "e5e2c82b8e3d4db7b86f404c40483e32e3d0d0d8"
},
{
"introduced": "67581074a0aab1f53cdafe7eead5f5d07f3afec8"
},
{
"fixed": "f7e0d7bb4fa4f3f2f004b6bfa501f950285d87df"
},
{
"introduced": "68485a1eb627c9a992f266263157327649822db3"
},
{
"last_affected": "68485a1eb627c9a992f266263157327649822db3"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "18.0.0"
},
{
"fixed": "19.0.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "18.0.0"
},
{
"fixed": "19.0.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "19.1.0"
},
{
"fixed": "19.1.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "19.1.0"
},
{
"fixed": "19.1.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:19.2.0:*:*:*:community:*:*:*",
"range": [
{
"introduced": "19.2.0"
},
{
"last_affected": "19.2.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:19.2.0:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "19.2.0"
},
{
"last_affected": "19.2.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"19.2.0",
"v19.1.0-ee",
"v19.2.0-ee"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12436.json"
}
}
],
"modified": "2026-10-30T10:30:53.867230158Z",
"provider": "osv",
"references": [
"https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/",
"https://gitlab.com/gitlab-org/gitlab/-/work_items/603223",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12436.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-12436",
"https://hackerone.com/reports/3800511"
],
"provider_metadata": {
"cwe_ids": [
"CWE-915"
],
"cna_assigner": "GitLab",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "18.0"
},
{
"fixed": "19.0.5"
},
{
"introduced": "19.1"
},
{
"fixed": "19.1.3"
},
{
"introduced": "19.2"
},
{
"fixed": "19.2.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
},
{
"extracted_events": [
{
"range": [
{
"introduced": "18.0"
},
{
"fixed": "19.0.5"
},
{
"introduced": "19.1"
},
{
"fixed": "19.1.3"
},
{
"introduced": "19.2"
},
{
"fixed": "19.2.1"
}
],
"source": "DESCRIPTION"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12436.json"
}
},
"related_cves": [
{
"value": "CVE-2026-12436",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 496351,
"published_at": "2026-07-29T19:00:36.048+00:00"
}