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CVE-2026-3553— 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）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 12.0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，该漏洞源于授权检查不正确，可能导致经过身份验证的用户访问机密问题详情。

CVSS 3.1 · Low EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 3

VendorProduct Version RangeStatus
GitLab GitLab 12.0< 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-2026-3553

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 12.0 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 to access confidential issue details due to incorrect authorization checks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/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 CE/EE 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 12.0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，该漏洞源于授权检查不正确，可能导致经过身份验证的用户访问机密问题详情。
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 12.0 ~ 18.10.8 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-3553

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III. Intelligence Information for CVE-2026-3553

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Other References for CVE-2026-3553 (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-2026-6976 3.7 LOW Authorization Bypass Through User-Controlled Key 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-2026-3553

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