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CVE-2026-1184— Deserialization of Untrusted Data in GitLab

CVSS 6.5 · Medium EPSS 0.02% · P4

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 3

VendorProductVersion RangeStatus
GitLabGitLab11.9< 18.9.7affected
18.10< 18.10.6affected
18.11< 18.11.3affected
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I. Basic Information for CVE-2026-1184

Vulnerability Information
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Vulnerability Title
Deserialization of Untrusted Data in GitLab
Source: NVD (National Vulnerability Database)
Vulnerability Description
GitLab has remediated an issue in GitLab EE affecting all versions from 11.9 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by uploading a specially crafted file due to improper validation.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
GitLab 代码问题漏洞
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 11.9至18.9.7之前版本、18.10至18.10.6之前版本和18.11至18.11.3之前版本存在代码问题漏洞，该漏洞源于验证不当，可能导致未经身份验证的用户通过上传特制文件造成拒绝服务。
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 11.9 ~ 18.9.7 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-1184

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III. Intelligence Information for CVE-2026-1184

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Patches & Fixes for CVE-2026-1184 (2)

Same Patch Batch · GitLab · 2026-05-14 · 24 CVEs total

CVE-2026-74818.7 HIGHImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-73778.7 HIGHImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-60738.7 HIGHImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2025-148697.5 HIGHImproper Validation of Specified Quantity in Input in GitLab
CVE-2025-148707.5 HIGHAllocation of Resources Without Limits or Throttling in GitLab
CVE-2026-16597.5 HIGHAllocation of Resources Without Limits or Throttling in GitLab
CVE-2026-13226.8 MEDIUMBusiness Logic Errors in GitLab
CVE-2026-82806.5 MEDIUMAllocation of Resources Without Limits or Throttling in GitLab
CVE-2026-45246.5 MEDIUMAuthentication Bypass Using an Alternate Path or Channel in GitLab
CVE-2026-45276.5 MEDIUMCross-Site Request Forgery (CSRF) in GitLab
CVE-2026-31605.8 MEDIUMUnintended Proxy or Intermediary ('Confused Deputy') in GitLab
CVE-2026-63355.4 MEDIUMImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2025-126695.4 MEDIUMImproper Control of Generation of Code ('Code Injection') in GitLab
CVE-2026-36074.3 MEDIUMAccess Control Check Implemented After Asset is Accessed in GitLab
CVE-2026-81444.3 MEDIUMMissing Authorization in GitLab
CVE-2026-60634.3 MEDIUMAuthorization Bypass Through User-Controlled Key in GitLab
CVE-2026-30744.3 MEDIUMAuthorization Bypass Through User-Controlled Key in GitLab
CVE-2026-30734.3 MEDIUMAuthorization Bypass Through User-Controlled Key in GitLab
CVE-2026-13384.3 MEDIUMAuthorization Bypass Through User-Controlled Key in GitLab
CVE-2025-138744.3 MEDIUMAuthorization Bypass Through User-Controlled Key in GitLab

Showing top 20 of 24 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab
Same weakness: CWE-502

V. Comments for CVE-2026-1184

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