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CVE-2026-6277— Incorrect Authorization in GitLab

Quick assessment

Affected
GitLab GitLab
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GitLab Enterprise Edition（EE）是美国GitLab公司的一套内容管理系统。 GitLab EE 13.9之前版本、18.10.8之前版本、18.11.5之前版本和19.0.2之前版本存在安全漏洞，该漏洞源于授权执行不正确，可能导致具有安全管理员角色权限的经过身份验证的用户管理项目安全配置。

CVSS 4.3 · Medium EPSS 0.38% · P29

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts

Affected Version Matrix 3

VendorProduct Version RangeStatus
GitLab GitLab 13.9< 18.10.8 affected
18.11< 18.11.5 affected
19.0< 19.0.2 affected
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I. Basic Information for CVE-2026-6277

Vulnerability Information
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Vulnerability Title
Incorrect Authorization in GitLab
Source: CVE Program / CVE List V5
Vulnerability Description
GitLab has remediated an issue in GitLab EE affecting all versions from 13.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with Security Manager-role permissions to manage project security configuration even when the relevant feature was in a disabled state, due to incorrect authorization enforcement.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
GitLab Enterprise Edition（EE） 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitLab Enterprise Edition（EE）是美国GitLab公司的一套内容管理系统。 GitLab EE 13.9之前版本、18.10.8之前版本、18.11.5之前版本和19.0.2之前版本存在安全漏洞，该漏洞源于授权执行不正确，可能导致具有安全管理员角色权限的经过身份验证的用户管理项目安全配置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GitLab GitLab 13.9 ~ 18.10.8 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-6277

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III. Intelligence Information for CVE-2026-6277

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Other References for CVE-2026-6277 (1)

Same Patch Batch · GitLab · 2026-06-11 · 11 CVEs total

CVE-2026-10087 8.7 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-7250 7.5 HIGH Allocation of Resources Without Limits or Throttling in GitLab
CVE-2026-8589 7.3 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-1500 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in GitLab
CVE-2026-6269 5.4 MEDIUM Incorrect Authorization in GitLab
CVE-2026-9204 5.3 MEDIUM Server-Side Request Forgery (SSRF) in GitLab
CVE-2026-10733 4.3 MEDIUM Improper Restriction of Rendered UI Layers or Frames in GitLab
CVE-2026-6976 3.7 LOW Authorization Bypass Through User-Controlled Key in GitLab
CVE-2026-3553 3.1 LOW Incorrect Authorization in GitLab
CVE-2026-9694 2.6 LOW Improper Neutralization of Substitution Characters in GitLab

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab
Same weakness: CWE-863

V. Comments for CVE-2026-6277

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