High
Security advisory
A collision in access memoization logic in all versions of GitLab CE/EE before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, leads to potential elevated privileges in groups and projects under rare circumstances
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-39937
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:15 UTC · Revision 1
Source evidence
A collision in access memoization logic in all versions of GitLab CE/EE before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, leads to potential elevated privileges in groups and projects under rare circumstances
osv:CVE-2021-39937
Complete source record
{
"id": "858a233212caff9da4b06efa2cf9d653290745ecd7677cfe8a0f72fee0e43917",
"url": "https://osv.dev/vulnerability/CVE-2021-39937",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-39937",
"summary": "A collision in access memoization logic in all versions of GitLab CE/EE before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, leads to potential elevated privileges in groups and projects under rare circumstances",
"evidence": "osv:CVE-2021-39937",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2021-39937",
"aliases": [
"BIT-gitlab-2021-39937",
"CVE-2021-39937"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.com/gitlab-org/gitlab",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "057790c613dea428aa523357c333ced5433794ee"
},
{
"introduced": "19c719febd74b6edf549bf6a2c0e36bf8f176d56"
},
{
"fixed": "a1175384df48e74899d664520601823016d81084"
},
{
"introduced": "490a8efda84a04e31ac41b882d95bb717c202437"
},
{
"fixed": "4511944420f00a68d5df2b3d81e5dae7fa2888f3"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "14.3.6"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "14.3.6"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "14.4.0"
},
{
"fixed": "14.4.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "14.4.0"
},
{
"fixed": "14.4.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "14.5.0"
},
{
"fixed": "14.5.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "14.5.0"
},
{
"fixed": "14.5.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v14.5.1-ee",
"v14.4.3-ee",
"v14.3.5-ee",
"v14.3.2-ee",
"v14.5.0-ee",
"v14.4.2-ee",
"v14.4.0-ee",
"v14.3.3-ee",
"v14.3.0-ee",
"v14.3.0-rc42-ee",
"11-10-0cfa69752d8-74ffd66ae-ee",
"11-10-0cfa69752d8-0d9531c80-ee",
"11-10-119f9509d50-6d7537235-ee",
"v7.3.0-ee",
"v7.3.0.rc1-ee",
"v7.2.0.rc5-ee",
"v7.2.0.rc4-ee",
"v7.2.0.rc3-ee",
"v7.2.0.rc2-ee",
"v7.2.0.rc1-ee",
"v7.1.0-ee",
"v7.1.0.rc1-ee",
"v7.0.0-ee",
"v6.8.0-ee",
"v6.7.0-ee",
"v6.7.0.rc1-ee",
"v6.6.0-ee",
"v6.5.0-ee",
"v6.4.0-ee",
"v6.3.1-ee",
"v6.3.0-ee",
"v6.1.0-ee",
"v6.0.0-ee",
"v6.0.0-ee.rc1",
"v6.0.0-ee.beta",
"v5.2.0",
"v5.1.0",
"v5.0.0",
"v4.0.0",
"v4.0.0rc2",
"v4.0.0rc1",
"v3.1.0",
"v3.0.3",
"v3.0.2",
"v3.0.1",
"v3.0.0",
"v2.9.1",
"v2.9.0",
"v2.8.2",
"v2.8.1",
"v2.8.0",
"v2.8.0pre",
"v2.7.0",
"v2.7.0pre",
"v2.6.3",
"v2.6.2",
"v2.6.1",
"v2.6.0",
"v2.6.0pre",
"v2.5.0",
"v2.4.1",
"v2.4.0",
"v2.4.0pre",
"v2.3.1",
"v2.3.0",
"v2.3.0pre",
"v1.2.2",
"v1.2.1",
"v1.2.0",
"v1.2.0pre"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-39937.json"
}
}
],
"modified": "2026-10-30T10:30:47.174455283Z",
"provider": "osv",
"references": [
"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39937.json",
"https://gitlab.com/gitlab-org/gitlab/-/issues/336802"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-39937",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434202,
"published_at": "2021-12-13T16:15:09.507+00:00"
}