CVE-2026-5173

HIGH

CVSS v3.1: 8.5 · EPSS: 0.0002 (5.7 percentile)

NetworkNo user interactionVendor advisory ref

Source data as of:

At a glance

Severity
HIGH
CVSS
8.5 v3.1 · NVD
EPSS
0.0002 (5.7 percentile) · FIRST.org
CISA KEV
No
Attack conditions (CVSS vector)
NetworkNo user interaction · Source: NVD Vector
Affected vendors
gitlab
Published
2026-04-08 · Modified: 2026-04-16
References
Jump to references (2)

CVSS / EPSS / KEV

CVSS v3.1 8.5 / 10 HIGH Source: NVD
EPSS 0.0002 5.7 percentile Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

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.

Record details

CVE ID
CVE-2026-5173
CVSS (v3.1)
8.5 (HIGH)
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Exploitability subscore
3.1
Impact subscore
4.7
EPSS
0.0002 (5.7 percentile) — 2026-04-17
CISA KEV
No
Weakness (CWE)
CWE-749
Affected vendors
gitlab
Affected configurations (CPE)
6
Published
2026-04-08
Modified
2026-04-16
Status
Analyzed

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same affected vendor

CVE-2026-4332 MEDIUM CVSS 5.4 CVE-2026-3848 MEDIUM CVSS 5.0 CVE-2026-4916 LOW CVSS 2.7

Same weakness type (CWE)

CVE-2006-1547 HIGH CVSS 7.5 KEV

Published the same year

CVE-2026-21643 CRITICAL CVSS 9.8 KEV CVE-2026-22738 CRITICAL CVSS 9.8 CVE-2026-27143 CRITICAL CVSS 9.8 CVE-2026-29139 CRITICAL CVSS 9.8
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