High
Exposed Dangerous Method or Function in GitLab
Type: advisorySources: OSV
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-5173
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 08:05 UTC · Revision 1
Source evidence
Exposed Dangerous Method or Function in GitLab
core-osv · Original sourcePublished 8 Apr 2026, 22:25 UTC
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.
osv:CVE-2026-5173
Complete source record
{
"id": "5bf7cf17d3ca5d4745701c5fca2a6dbeead673f92e9756e922ec0e2cdbe22133",
"url": "https://osv.dev/vulnerability/CVE-2026-5173",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Exposed Dangerous Method or Function in GitLab",
"summary": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.",
"evidence": "osv:CVE-2026-5173",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-5173",
"aliases": [
"BIT-gitlab-2026-5173",
"CVE-2026-5173"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.com/gitlab-org/gitlab",
"type": "GIT",
"events": [
{
"introduced": "37be6ae4d071c237cf140e2b206ad4062adefcd1"
},
{
"fixed": "0e5855944a09654b84df0e4549c957a5d8c11c9d"
},
{
"introduced": "20fe49b575fedd2b8cadc2c0640178879854aeb3"
},
{
"fixed": "195c0c16799d8e10e8c16f129b0719f6c48b6110"
},
{
"introduced": "57c08314af5bc8f317b1967330f92ed029e2c628"
},
{
"fixed": "1dcd29ee5eb310bc7572339a95188e123e83970b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "16.9.6"
},
{
"fixed": "18.8.9"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "16.9.6"
},
{
"fixed": "18.8.9"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "18.9.0"
},
{
"fixed": "18.9.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "18.9.0"
},
{
"fixed": "18.9.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "18.10.0"
},
{
"fixed": "18.10.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
"range": [
{
"introduced": "18.10.0"
},
{
"fixed": "18.10.3"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v18.9.0-ee",
"v18.9.4-ee",
"v18.10.2-ee",
"v18.10.0-ee"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5173.json"
}
}
],
"modified": "2026-10-30T10:30:56.966833122Z",
"provider": "osv",
"references": [
"https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/",
"https://gitlab.com/gitlab-org/gitlab/-/work_items/588959",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5173.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-5173"
],
"provider_metadata": {
"cwe_ids": [
"CWE-749"
],
"cna_assigner": "GitLab",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "16.9.6"
},
{
"fixed": "18.8.9"
},
{
"introduced": "18.9"
},
{
"fixed": "18.9.5"
},
{
"introduced": "18.10"
},
{
"fixed": "18.10.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
},
{
"extracted_events": [
{
"range": [
{
"introduced": "16.9.6"
},
{
"fixed": "18.8.9"
},
{
"introduced": "18.9"
},
{
"fixed": "18.9.5"
},
{
"introduced": "18.10"
},
{
"fixed": "18.10.3"
}
],
"source": "DESCRIPTION"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5173.json"
}
},
"related_cves": [
{
"value": "CVE-2026-5173",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 493594,
"published_at": "2026-04-08T22:25:12.946+00:00"
}