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CVE-2026-5296— Missing 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 Enterprise Edition（EE） 18.7版本至18.10.7之前版本、18.11版本至18.11.4之前版本和19.0版本至19.0.1之前版本存在安全漏洞，该漏洞源于可能导致具有开发者角色权限的认证用户在特定条件下绕过流程限制。

CVSS 4.3 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 3

VendorProduct Version RangeStatus
GitLab GitLab 18.7< 18.10.7 affected
18.11< 18.11.4 affected
19.0< 19.0.1 affected
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I. Basic Information for CVE-2026-5296

Vulnerability Information
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Vulnerability Title
Missing Authorization in GitLab
Source: CVE Program / CVE List V5
Vulnerability Description
GitLab has remediated an issue in GitLab EE affecting all versions from 18.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that when foundational flows were enabled at the group level, could have allowed an authenticated user with developer-role permissions to bypass flow restrictions under certain conditions.
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
授权机制缺失
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 Enterprise Edition（EE） 18.7版本至18.10.7之前版本、18.11版本至18.11.4之前版本和19.0版本至19.0.1之前版本存在安全漏洞，该漏洞源于可能导致具有开发者角色权限的认证用户在特定条件下绕过流程限制。
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 18.7 ~ 18.10.7 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5296

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III. Intelligence Information for CVE-2026-5296

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Patches & Fixes for CVE-2026-5296 (1)

Other References for CVE-2026-5296 (1)

Same Patch Batch · GitLab · 2026-05-27 · 6 CVEs total

CVE-2026-4868 8.2 HIGH Authorization Bypass Through User-Controlled Key in GitLab
CVE-2026-1402 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in GitLab
CVE-2026-6713 5.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-8716 4.3 MEDIUM Use of Incorrectly-Resolved Name or Reference in GitLab
CVE-2026-2601 4.3 MEDIUM Missing Authorization in GitLab

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab
Same weakness: CWE-862

V. Comments for CVE-2026-5296

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