CVE-2023-3994— Inefficient Regular Expression Complexity in GitLab
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I. Basic Information for CVE-2023-3994
Vulnerability Information
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Vulnerability Title
Inefficient Regular Expression Complexity in GitLab
Source: NVD (National Vulnerability Database)
Vulnerability Description
An issue has been discovered in GitLab CE/EE affecting all versions starting from 9.3 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use ProjectReferenceFilter to the preview_markdown endpoint.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1333
Source: NVD (National Vulnerability Database)
Vulnerability Title
GitLab 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitLab是美国GitLab公司的一个开源的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 CE/EE 9.3 到 16.0.8版本、16.1.3 之前版本、16.2.2 之前版本存在安全漏洞，该漏洞源于通过将使用 ProjectReferenceFilter 设计的有效负载发送到 Preview_markdown 端点，可以实现正则表达式拒绝服务。
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
II. Public POCs for CVE-2023-3994
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|---|
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- https://gitlab.com/gitlab-org/gitlab/-/issues/416225issue-tracking
- https://nvd.nist.gov/vuln/detail/CVE-2023-3994
Same Patch Batch · GitLab · 2023-08-02 · 7 CVEs total
| CVE-2023-3993 | 4.9 MEDIUM | Insertion of Sensitive Information into Log File in GitLab |
| CVE-2023-3401 | 4.8 MEDIUM | Improper Control of Generation of Code ('Code Injection') in GitLab |
| CVE-2023-3500 | 4.8 MEDIUM | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi |
| CVE-2023-2022 | 4.3 MEDIUM | Missing Authorization in GitLab |
| CVE-2023-4011 | 4.3 MEDIUM | Allocation of Resources Without Limits or Throttling in GitLab |
| CVE-2023-3900 | 4.3 MEDIUM | Improper Validation of Specified Type of Input in GitLab |
IV. Related Vulnerabilities
Same product: GitLab
- CVE-2026-3254
Improper Restriction of Rendered UI Layers or Frames in GitL - CVE-2026-4922
Cross-Site Request Forgery (CSRF) in GitLab - CVE-2025-0186
Allocation of Resources Without Limits or Throttling in GitL - CVE-2025-3922
Allocation of Resources Without Limits or Throttling in GitL - CVE-2025-6016
Allocation of Resources Without Limits or Throttling in GitL
Same vendor: GitLab
- CVE-2026-3254
Improper Restriction of Rendered UI Layers or Frames in GitL - CVE-2026-4922
Cross-Site Request Forgery (CSRF) in GitLab - CVE-2025-0186
Allocation of Resources Without Limits or Throttling in GitL - CVE-2025-3922
Allocation of Resources Without Limits or Throttling in GitL - CVE-2025-6016
Allocation of Resources Without Limits or Throttling in GitL
Same weakness: CWE-1333
- CVE-2026-33079
Mistune ReDoS in LINK_TITLE_RE allows denial of service with - CVE-2026-41040
GROWI 安全漏洞 - CVE-2026-40319
Giskard has a Regular Expression Denial of Service (ReDoS) i - CVE-2026-5986
Zod jsVideoUrlParser util.js getTime redos - CVE-2026-35041
ReDoS in fast-jwt when using RegExp in allowed* leading to C
V. Comments for CVE-2023-3994
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