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CVE-2025-8405— Improper Encoding or Escaping of Output in GitLab

CVSS 7.7 · High EPSS 0.01% · P1
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I. Basic Information for CVE-2025-8405

Vulnerability Information
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Vulnerability Title
Improper Encoding or Escaping of Output in GitLab
Source: NVD (National Vulnerability Database)
Vulnerability Description
GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17.1 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to perform unauthorized actions on behalf of other users by injecting malicious HTML into vulnerability code flow displays.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对输出编码和转义不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
GitLab Enterprise Edition（EE）和GitLab Community Edition（CE） 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 Enterprise Edition（EE）和GitLab Community Edition（CE） 18.4.6之前版本、18.5版本至18.5.4之前版本和18.6版本至18.6.2之前版本存
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

VendorProductAffected VersionsCPESubscribe
GitLabGitLab 17.1 ~ 18.4.6 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2025-8405

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III. Intelligence Information for CVE-2025-8405

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Same Patch Batch · GitLab · 2025-12-11 · 10 CVEs total

CVE-2025-127168.7 HIGHImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2025-120298.0 HIGHImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2025-125627.5 HIGHAllocation of Resources Without Limits or Throttling in GitLab
CVE-2025-119846.8 MEDIUMAuthentication Bypass Using an Alternate Path or Channel in GitLab
CVE-2025-141576.5 MEDIUMAllocation of Resources Without Limits or Throttling in GitLab
CVE-2025-40976.5 MEDIUMAllocation of Resources Without Limits or Throttling in GitLab
CVE-2025-139784.3 MEDIUMGeneration of Error Message Containing Sensitive Information in GitLab
CVE-2025-112474.3 MEDIUMAuthorization Bypass Through User-Controlled Key in GitLab
CVE-2025-127343.5 LOWImproper Encoding or Escaping of Output in GitLab

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab
Same weakness: CWE-116

V. Comments for CVE-2025-8405

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