CVE-2023-2198

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.7 before 15...

7.5 HighFix available

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.7 before 15.10.8, all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2. A Regular Expression Denial of Service was possible via sending crafted payloads to the preview_markdown endpoint.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.32%Up 1.3 points since Jun 8, 2023

What each source reports

CVE List Score used 7.5

Record: CVE-2023-2198
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1333
Updated: 2026-11-02

EUVDEUVD-2023-33711 7.5

Record: EUVD-2023-33711
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-2p9w-5q3p-g7cv 7.5

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.7 before 15...

Record: GHSA-2p9w-5q3p-g7cv
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1333
Updated: 2026-11-02

NVD 7.5

Record: CVE-2023-2198
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1333
Updated: 2026-11-02

OSV 7.5

Record: CVE-2023-2198
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-2198 7.5

Record: UBUNTU-CVE-2023-2198
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVBIT-gitlab-2023-2198 No score

Record: BIT-gitlab-2023-2198
Updated: 2026-11-02

Affected products

gitlab

Affected packages

Affected packages
Package	Affected	Fixed
`gitlab` Bitnami	8.7.0 up to 15.10.8, 15.11.0 up to 15.11.7, 16.0.0 up to 16.0.2	15.10.815.11.716.0.2
`gitlab` Ubuntu:16.04:LTS	All versions, plus listed versions 8.4.3+dfsg-98.4.3+dfsg-128.5.8+dfsg-5	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-2198 is a high vulnerability (CVSS 7.5) in Gitlab, published June 7, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.32%, the 71st percentile. Fixed in gitlab 15.10.8.