High
Security advisory
In all versions of GitLab CE/EE starting from 0.8.0 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 certain Unicode characters can be abused to commit malicious code into projects without being noticed in merge request or source code viewer UI.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-39908
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:57 UTC · Revision 1
Source evidence
In all versions of GitLab CE/EE starting from 0.8.0 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 certain Unicode characters can be abused to commit malicious code into projects without being noticed in merge request or source code viewer UI.
osv:CVE-2021-39908
Complete source record
{
"id": "cae932f7e1b27aa8e02b9348404e97d609940f0936226b3075c372dca1361bb0",
"url": "https://osv.dev/vulnerability/CVE-2021-39908",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-39908",
"summary": "In all versions of GitLab CE/EE starting from 0.8.0 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 certain Unicode characters can be abused to commit malicious code into projects without being noticed in merge request or source code viewer UI.",
"evidence": "osv:CVE-2021-39908",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2021-39908",
"aliases": [
"BIT-gitlab-2021-39908",
"CVE-2021-39908"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.com/gitlab-org/gitlab",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "9ed95b96a6766af9336048a63a29b678f88a9413"
},
{
"introduced": "dec73e99fddac59c0bf816dc4bffd2a30abae6de"
},
{
"fixed": "3e776d83389c706fb81973736e57ca6a6fb952fc"
},
{
"introduced": "19c719febd74b6edf549bf6a2c0e36bf8f176d56"
},
{
"last_affected": "19c719febd74b6edf549bf6a2c0e36bf8f176d56"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "0.8.0"
},
{
"fixed": "14.2.6"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "0.8.0"
},
{
"fixed": "14.2.6"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "14.3.0"
},
{
"fixed": "14.3.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "14.3.0"
},
{
"fixed": "14.3.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:14.4.0:*:*:*:community:*:*:*",
"range": [
{
"introduced": "14.4.0"
},
{
"last_affected": "14.4.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:14.4.0:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "14.4.0"
},
{
"last_affected": "14.4.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"14.4.0",
"v14.3.2-ee",
"v14.4.0-ee",
"v14.3.3-ee",
"v14.2.4-ee",
"v14.3.0-ee",
"v14.2.3-ee",
"v14.2.1-ee",
"v14.2.0-ee",
"v14.2.0-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-2021-39908.json"
}
}
],
"modified": "2026-10-30T10:30:42.214845417Z",
"provider": "osv",
"references": [
"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39908.json",
"https://gitlab.com/gitlab-org/gitlab/-/issues/337193",
"https://hackerone.com/reports/1280077"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-39908",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 430914,
"published_at": "2022-04-01T23:15:10.407+00:00"
}