CVE-2023-2478

An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.4 before 15...

9.6 CriticalFix available

An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.4 before 15.9.7, all versions starting from 15.10 before 15.10.6, all versions starting from 15.11 before 15.11.2. Under certain conditions, a malicious unauthorized GitLab user may use a GraphQL endpoint to attach a malicious runner to any project.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

5.04%Up 5.0 points since May 9, 2023

What each source reports

CVE List Score used 9.6

Record: CVE-2023-2478
CVSS 3.1: 9.6 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-732
Updated: 2026-11-02

EUVDEUVD-2023-33963 9.6

Record: EUVD-2023-33963
CVSS 3.1: 9.6 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7h3w-v9hh-hp55 9.6

An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.4 before 15...

Record: GHSA-7h3w-v9hh-hp55
CVSS 3.1: 9.6 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-732
Updated: 2026-11-02

NVD 9.6

Record: CVE-2023-2478
CVSS 3.1: 9.6 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-732
Updated: 2026-11-02

OSV 9.6

Record: CVE-2023-2478
CVSS 3.1: 9.6 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-2478 6.5

Record: UBUNTU-CVE-2023-2478
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS 3.1: 9.6 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Updated: 2026-11-02

OSVBIT-gitlab-2023-2478 No score

Record: BIT-gitlab-2023-2478
Updated: 2026-11-02

Affected products

gitlab

Affected packages

Affected packages
Package	Affected	Fixed
`gitlab` Bitnami	15.4.0 up to 15.9.7, 15.10.0 up to 15.10.6, 15.11.0 up to 15.11.2	15.9.715.10.615.11.2
`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-2023-2478 is a critical vulnerability (CVSS 9.6) in Gitlab, published May 8, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.04%, the 92nd percentile. Fixed in gitlab 15.9.7.