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CVE-2023-3994

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CVE-2023-3994

Published: Aug 2, 2023

Modified: Apr 27, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

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.

VendorProductVersions

GitLab

GitLab

affected
9.3 - < 16.0.8
affected
16.1 - < 16.1.3
affected
16.2 - < 16.2.2

Weaknesses (CWE)

CWE-1333

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

GitLab Issue #416225
issue-tracking
permissions-required
HackerOne Bug Bounty Report #1963255
technical-description
exploit
permissions-required

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