CVE-2026-5173

CVE Enrichment

CVSS: 8.5 HIGH
EPSS: 0.43%
EPSS Percentile: 37.75%
CISA KEV: Not listed

Description

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 09-Apr-2026 06:17
Last Modified: 25-Jul-2026 03:10
EPSS Date: 2026-11-05
CWE: CWE-749

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:L /
                            UI:N /
                            S:C /
                            C:H /
                            I:L /
                            A:N

CNA Products / Version Status

GitLab · GitLab Source: CNA · [email protected]
Default status: unaffected

16.9.6 ≤ version < 18.8.9 — affected (semver)
18.9 ≤ version < 18.9.5 — affected (semver)
18.10 ≤ version < 18.10.3 — affected (semver)

CPEs: cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

repo: git://[email protected]:gitlab-org/gitlab.git

Affected Products / Versions

gitlab / gitlab Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 16.9.6 · before (exclusive) 18.8.9
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
gitlab / gitlab Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 18.9.0 · before (exclusive) 18.9.5
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
gitlab / gitlab Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 18.10.0 · before (exclusive) 18.10.3
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
gitlab / gitlab Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 16.9.6 · before (exclusive) 18.8.9
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
gitlab / gitlab Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 18.9.0 · before (exclusive) 18.9.5
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
gitlab / gitlab Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 18.10.0 · before (exclusive) 18.10.3
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*

References

Last enrichment sync: 06-Nov-2026 17:52
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

GitLab has released critical security patches for Community and Enterprise editions to fix twelve vulnerabilities, including a high-severity websocket flaw tracked as CVE-2026-5173. GitLab Patches 12 Vulnerabilities, Including High-Severity WebSocket Flaw

CVE (11)

People (6)

Vendors (1)

Products (4)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.