CVE-2026-6976— Authorization Bypass Through User-Controlled Key in GitLab
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-6976
Vulnerability Information
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Vulnerability Title
Authorization Bypass Through User-Controlled Key in GitLab
Source: NVD (National Vulnerability Database)
Vulnerability Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 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 developer-role permissions to hide changes from merge request diff views due to improper input handling of file names.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
Vulnerability Title
GitLab Enterprise Edition（EE）和GitLab Community Edition（CE） 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitLab Enterprise Edition（EE）和GitLab Community Edition（CE）都是美国GitLab公司的产品。GitLab Enterprise Edition是一套内容管理系统。GitLab Community Edition是一种社区版 GitLab 。 GitLab CE/EE 15.9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，该漏洞源于文件名输入处理不当，可能导致具有开发者角色权限的经过身份验证的用户隐藏合并请
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
II. Public POCs for CVE-2026-6976
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Other References for CVE-2026-6976 (1)
Same Patch Batch · GitLab · 2026-06-11 · 12 CVEs total
| CVE-2026-10087 | 8.7 HIGH | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi |
| CVE-2026-6552 | 8.7 HIGH | Authorization Bypass Through User-Controlled Key in GitLab |
| 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-2026-6277 | 4.3 MEDIUM | Incorrect Authorization 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 weakness: CWE-639
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Easy!Appointments: Authorization bypass in Google OAuth prov - CVE-2026-52839
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V. Comments for CVE-2026-6976
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