Medium
Authentication Bypass Using an Alternate Path or Channel in GitLab
Type: advisorySources: OSV
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.9.1 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to access confidential issue content in public projects without proper authorization due to improper authorization checks.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-4524
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 18:05 UTC · Revision 1
Source evidence
Authentication Bypass Using an Alternate Path or Channel 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 18.9.1 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to access confidential issue content in public projects without proper authorization due to improper authorization checks.
osv:CVE-2026-4524
Complete source record
{
"id": "a09633e50ba29053cbd0170fb4318fad29d0a252a0221cdfddfe25bc7e4fb951",
"url": "https://osv.dev/vulnerability/CVE-2026-4524",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Authentication Bypass Using an Alternate Path or Channel in GitLab",
"summary": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.9.1 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to access confidential issue content in public projects without proper authorization due to improper authorization checks.",
"evidence": "osv:CVE-2026-4524",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-4524",
"aliases": [
"BIT-gitlab-2026-4524",
"CVE-2026-4524"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.com/gitlab-org/gitlab",
"type": "GIT",
"events": [
{
"introduced": "91256b9c8dc94308d8be9557b4eb041933a7fffa"
},
{
"fixed": "d2242c5752a152db3c281d8a9d1e7f248e1654a9"
},
{
"introduced": "57c08314af5bc8f317b1967330f92ed029e2c628"
},
{
"fixed": "f80804c4e73fb0404af24e88ffb5246c0aeeda40"
},
{
"introduced": "1060c7b0ff78be7c8abe8fd6d23dcb1ca493fd78"
},
{
"fixed": "daa4145c8330213081c57260b569539e3b157b87"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "18.9.1"
},
{
"fixed": "18.9.7"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "18.9.1"
},
{
"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-2026-4524.json"
}
}
],
"modified": "2026-10-30T10:30:42.691271704Z",
"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/594295",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4524.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-4524",
"https://hackerone.com/reports/3597717"
],
"provider_metadata": {
"cwe_ids": [
"CWE-288"
],
"cna_assigner": "GitLab",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "18.9.1"
},
{
"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": "18.9.1"
},
{
"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-2026-4524.json"
}
},
"related_cves": [
{
"value": "CVE-2026-4524",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 498183,
"published_at": "2026-05-14T05:34:52.339+00:00"
}