Is CVE-2026-6063 in the CISA KEV catalog?

No. CVE-2026-6063 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-6063?

CVE-2026-6063 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2026-6063?

CVE-2026-6063 has an EPSS score of 0.19% (9th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6063?

Upgrade gitlab to 18.11.3 or later.

CVE & CISA-KEV Catalog

CVE-2026-6063

MEDIUM

4.3

CVSS v3

NVD

Description

GitLab has remediated an issue in GitLab 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 under certain conditions could have allowed an authenticated user with developer-role permissions to remove code owner approval rules from merge requests due to improper access control.

CWE-639Authorization Bypass Through User-Controlled Key

How to fix

Remediation Available

gitlabNVD

Affected:>= 18.11.0, < 18.11.3Fixed in:18.11.3CVE-2026-6063derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.19%probability of exploitation in 30 days

9thpercentile

Low risk: more likely to be exploited than 9% of all known CVEs.

References

Release Notes1

about.gitlab.com

Other references2

Related Vulnerabilities

Other CWE-639 (Authorization Bypass Through User-Controlled Key) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-6875	Critical	9.8	90%	-	-
CVE-2024-46982	High	7.5	61%	-	Fix
CVE-2021-45428	Critical	9.8	57%	-	-
CVE-2019-17382	Critical	9.1	54%	-	Fix
CVE-2019-13360	Critical	9.8	24%	-	-
CVE-2023-48783	Medium	5.4	22%	-	Fix

Embed a live status badge for CVE-2026-6063

Markdown

[![CVE-2026-6063](https://tridentstack.com/cve/badge/CVE-2026-6063.svg)](https://tridentstack.com/cve/CVE-2026-6063)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-6063"><img src="https://tridentstack.com/cve/badge/CVE-2026-6063.svg" alt="CVE-2026-6063"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-16.