Medium
Cross-Site Request Forgery (CSRF) in GitLab
Type: advisorySources: OSV
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to create unauthorized Jira subscriptions for a targeted user's namespace via a specially crafted link due to missing CSRF protection.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-4527
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 16:09 UTC · Revision 1
Source evidence
Cross-Site Request Forgery (CSRF) in GitLab
core-osv · Original sourcePublished 14 May 2026, 05:34 UTC
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to create unauthorized Jira subscriptions for a targeted user's namespace via a specially crafted link due to missing CSRF protection.
osv:CVE-2026-4527
Complete source record
{
"id": "aa932e8f7682d5bfa0eda81712c4124cea82ace0e632640537c59ae6226af0ea",
"url": "https://osv.dev/vulnerability/CVE-2026-4527",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Cross-Site Request Forgery (CSRF) in GitLab",
"summary": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to create unauthorized Jira subscriptions for a targeted user's namespace via a specially crafted link due to missing CSRF protection.",
"evidence": "osv:CVE-2026-4527",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-4527",
"aliases": [
"BIT-gitlab-2026-4527",
"CVE-2026-4527"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.com/gitlab-org/gitlab",
"type": "GIT",
"events": [
{
"introduced": "dfa95630be4342688ff24c0fa0d283e427a4a996"
},
{
"fixed": "d2242c5752a152db3c281d8a9d1e7f248e1654a9"
},
{
"introduced": "57c08314af5bc8f317b1967330f92ed029e2c628"
},
{
"fixed": "f80804c4e73fb0404af24e88ffb5246c0aeeda40"
},
{
"introduced": "1060c7b0ff78be7c8abe8fd6d23dcb1ca493fd78"
},
{
"fixed": "daa4145c8330213081c57260b569539e3b157b87"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "11.10.0"
},
{
"fixed": "18.9.7"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "11.10.0"
},
{
"fixed": "18.9.7"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "18.10.0"
},
{
"fixed": "18.10.6"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "18.10.0"
},
{
"fixed": "18.10.6"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "18.11.0"
},
{
"fixed": "18.11.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "18.11.0"
},
{
"fixed": "18.11.3"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v18.10.5-ee",
"v18.11.2-ee",
"v18.11.0-ee",
"v18.10.2-ee",
"v18.10.0-ee"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4527.json"
}
}
],
"modified": "2026-10-30T10:30:31.478426358Z",
"provider": "osv",
"references": [
"https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/",
"https://gitlab.com/gitlab-org/gitlab/-/work_items/594339",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4527.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-4527",
"https://hackerone.com/reports/3590487"
],
"provider_metadata": {
"cwe_ids": [
"CWE-352"
],
"cna_assigner": "GitLab",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "11.10"
},
{
"fixed": "18.9.7"
},
{
"introduced": "18.10"
},
{
"fixed": "18.10.6"
},
{
"introduced": "18.11"
},
{
"fixed": "18.11.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
},
{
"extracted_events": [
{
"range": [
{
"introduced": "11.10"
},
{
"fixed": "18.9.7"
},
{
"introduced": "18.10"
},
{
"fixed": "18.10.6"
},
{
"introduced": "18.11"
},
{
"fixed": "18.11.3"
}
],
"source": "DESCRIPTION"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4527.json"
}
},
"related_cves": [
{
"value": "CVE-2026-4527",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 486953,
"published_at": "2026-05-14T05:34:32.344+00:00"
}