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CVE-2026-15423— 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是美国GitLab公司开源的一款源代码管理平台。 GitLab 19.0.6之前版本、19.1.4之前版本和19.2.2之前版本存在授权问题漏洞，该漏洞源于流水线引用验证中的授权不当，可能导致具有开发者角色权限的已认证用户在无需所需推送权限的情况下在受保护分支上执行CI/CD流水线。

CVSS 8.5 · High EPSS 0.40% · P32

Affected Version Matrix 3

VendorProduct Version RangeStatus
GitLab GitLab 19.0< 19.0.6 affected
19.1< 19.1.4 affected
19.2< 19.2.2 affected
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I. Basic Information for CVE-2026-15423

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 CE/EE affecting all versions from 19.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute CI/CD pipelines on a protected branch without the required push permissions due to improper authorization in pipeline reference validation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/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 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitLab是美国GitLab公司开源的一款源代码管理平台。 GitLab 19.0.6之前版本、19.1.4之前版本和19.2.2之前版本存在授权问题漏洞，该漏洞源于流水线引用验证中的授权不当，可能导致具有开发者角色权限的已认证用户在无需所需推送权限的情况下在受保护分支上执行CI/CD流水线。
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 19.0 ~ 19.0.6 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-15423

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III. Intelligence Information for CVE-2026-15423

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Patches & Fixes for CVE-2026-15423 (1)

Other References for CVE-2026-15423 (1)

Same Patch Batch · GitLab · 2026-08-12 · 13 CVEs total

CVE-2026-15216 8.7 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-15217 8.7 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-19228 8.5 HIGH Authorization Bypass Through User-Controlled Key in GitLab
CVE-2026-16627 7.7 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-16494 7.1 HIGH Missing Authorization in GitLab
CVE-2026-7427 5.3 MEDIUM Allocation of Resources Without Limits or Throttling in GitLab
CVE-2026-18244 4.3 MEDIUM Missing Authorization in GitLab
CVE-2026-8667 4.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-18433 4.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-6821 4.3 MEDIUM Missing Authorization in GitLab
CVE-2026-4879 4.3 MEDIUM Missing Authorization in GitLab
CVE-2025-9486 3.3 LOW Incorrect Privilege Assignment in GitLab

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-15423

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