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CVE-2026-6976— Authorization Bypass Through User-Controlled Key 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）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

CVSS 3.7 · Low EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 3

VendorProduct Version RangeStatus
GitLab GitLab 15.9< 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-2026-6976

Vulnerability Information
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Vulnerability Title
Authorization Bypass Through User-Controlled Key in GitLab
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
GitLab GitLab 15.9 ~ 18.10.8 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-6976

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III. Intelligence Information for CVE-2026-6976

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Other References for CVE-2026-6976 (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-2026-6277 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 product: GitLab
Same vendor: GitLab
Same weakness: CWE-639

V. Comments for CVE-2026-6976

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