Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-5309— 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公司开源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版本至18.11.6之前版本、19.0版本至19.0.3之前版本和19.1版本至19.1.1之前版本存在授权问题漏洞，该漏洞源于授权问题，可能导致经过身份验证的用户在未经授权的情况下读取或修改其他组的虚拟注册表清理策略设置。

CVSS 5.4 · Medium EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 3

VendorProduct Version RangeStatus
GitLab GitLab 18.6< 18.11.6 affected
19.0< 19.0.3 affected
19.1< 19.1.1 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-5309

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

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 18.6 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user to read or modify another group's virtual registry cleanup policy settings without authorization.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 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版本至18.11.6之前版本、19.0版本至19.0.3之前版本和19.1版本至19.1.1之前版本存在授权问题漏洞，该漏洞源于授权问题，可能导致经过身份验证的用户在未经授权的情况下读取或修改其他组的虚拟注册表清理策略设置。
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 18.6 ~ 18.11.6 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5309

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-5309

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-5309 (2)

Other References for CVE-2026-5309 (1)

Same Patch Batch · GitLab · 2026-06-25 · 13 CVEs total

CVE-2026-10086 8.7 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-12053 8.6 HIGH Insertion of Sensitive Information into Log File in GitLab
CVE-2026-10712 8.0 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-11379 5.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-2238 5.3 MEDIUM Missing Authorization in GitLab
CVE-2026-8330 4.4 MEDIUM Insertion of Sensitive Information into Log File in GitLab
CVE-2026-5952 4.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-5796 4.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-1606 4.3 MEDIUM Improper Control of Generation of Code ('Code Injection') in GitLab
CVE-2026-0934 3.8 LOW Incorrect Authorization in GitLab
CVE-2026-3176 3.1 LOW Missing Authorization in GitLab
CVE-2026-12635 Reliance on Reverse DNS Resolution for a Security-Critical Action in GitLab

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-5309

No comments yet

Leave a comment