CVE-2023-3994

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-1333

Affected software

Vendor	Product	Versions
GitLab	GitLab	>= 9.3, < 16.0.8; >= 16.1, < 16.1.3; >= 16.2, < 16.2.2

References

https://gitlab.com/gitlab-org/gitlab/-/issues/416225Broken Link
https://hackerone.com/reports/1963255Permissions Required
https://gitlab.com/gitlab-org/gitlab/-/issues/416225Broken Link
https://hackerone.com/reports/1963255Permissions Required

Timeline

Published: Aug 2, 2023
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2023

CVE-2023-399416.5Improper access control in some Intel(R) SUR software before version 2.4.10587 may allow an unauthenticated user to potentially enable denia CVE-2023-399437.8In Ashlar-Vellum Cobalt versions prior to v12 SP2 Build (1204.200), the affected application lacks proper validation of user-supplied data w CVE-2023-399448.8OS command injection vulnerability in WRC-F1167ACF all versions, and WRC-1750GHBK all versions allows an attacker who can access the product CVE-2023-399457.5eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.0 CVE-2023-399467.5eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.1 CVE-2023-399477.5eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.1 CVE-2023-399487.5eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.10.0 CVE-2023-399497.5eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 CVE-2023-399505.2efibootguard is a simple UEFI boot loader with support for safely switching between current and updated partition sets. Insufficient or miss CVE-2023-399516.5OpenTelemetry Java Instrumentation provides OpenTelemetry auto-instrumentation and instrumentation libraries for Java. OpenTelemetry Java In CVE-2023-399526.5Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.1 CVE-2023-399534.8user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to versio