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CVE-2026-1080— 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是美国GitLab公司的一个端到端软件开发平台，具有内置的版本控制、问题跟踪、代码审查、CI/CD（持续集成和持续交付）等功能。 GitLab EE 18.6.6之前版本、18.7.4之前版本和18.8.4之前版本存在安全漏洞，该漏洞源于查询迭代API端点，可能导致经过身份验证的用户访问私有后代组的迭代数据。

CVSS 4.3 · Medium EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-1080

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 EE affecting all versions from 16.7 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that, under certain conditions could have allowed an authenticated user to access iteration data from private descendant groups by querying the iterations API endpoint.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitLab是美国GitLab公司的一个端到端软件开发平台，具有内置的版本控制、问题跟踪、代码审查、CI/CD（持续集成和持续交付）等功能。 GitLab EE 18.6.6之前版本、18.7.4之前版本和18.8.4之前版本存在安全漏洞，该漏洞源于查询迭代API端点，可能导致经过身份验证的用户访问私有后代组的迭代数据。
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 16.7 ~ 18.6.6 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-1080

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III. Intelligence Information for CVE-2026-1080

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Patches & Fixes for CVE-2026-1080 (1)

Same Patch Batch · GitLab · 2026-02-11 · 15 CVEs total

CVE-2025-7659 8.0 HIGH Origin Validation Error in GitLab
CVE-2025-8099 7.5 HIGH Allocation of Resources Without Limits or Throttling in GitLab
CVE-2026-0958 7.5 HIGH Interpretation Conflict in GitLab
CVE-2025-14560 7.3 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-0595 7.3 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-1387 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in GitLab
CVE-2026-1456 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in GitLab
CVE-2026-1458 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in GitLab
CVE-2025-12575 5.4 MEDIUM Server-Side Request Forgery (SSRF) in GitLab
CVE-2026-1094 4.6 MEDIUM Improper Validation of Unsafe Equivalence in Input in GitLab
CVE-2025-12073 4.3 MEDIUM Server-Side Request Forgery (SSRF) in GitLab
CVE-2025-14592 3.7 LOW Missing Authorization in GitLab
CVE-2025-14594 3.5 LOW Authorization Bypass Through User-Controlled Key in GitLab
CVE-2026-1282 3.5 LOW Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLab

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab
Same weakness: CWE-639

V. Comments for CVE-2026-1080

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