How severe is CVE-2023-6564?

CVE-2023-6564 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-6564 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6564?

CVE-2023-6564 primarily affects Gitlab. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-6564?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-6564 have an EU (EUVD) identifier?

Yes. CVE-2023-6564 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-58792.

When was CVE-2023-6564 published?

CVE-2023-6564 was published on 2024-02-08 and last updated on 2026-06-17.

CVE-2023-6564

CVE-2023-6564 is a medium-severity vulnerability in Gitlab with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-58792
Weakness: CWE-863
Affected product: Gitlab
Published: 2024-02-08
Last modified: 2026-06-17

Description

An issue has been discovered in GitLab EE Premium and Ultimate affecting versions 16.4.3, 16.5.3, and 16.6.1. In projects using subgroups to define who can push and/or merge to protected branches, there may have been instances in which subgroup members with the Developer role were able to push or merge to protected branches.

Frequently asked questions

What is CVE-2023-6564?: An issue has been discovered in GitLab EE Premium and Ultimate affecting versions 16.4.3, 16.5.3, and 16.6.1. In projects using subgroups to define who can push and/or merge to protected branches, there may have been instances in which subgroup members with the Developer role were able to push or merge to protected branches.
How severe is CVE-2023-6564?: CVE-2023-6564 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-6564 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6564?: CVE-2023-6564 primarily affects Gitlab. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-6564?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-6564 have an EU (EUVD) identifier?: Yes. CVE-2023-6564 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-58792.
When was CVE-2023-6564 published?: CVE-2023-6564 was published on 2024-02-08 and last updated on 2026-06-17.

References

https://gitlab.com/gitlab-com/gl-infra/production/-/issues/17213

Affected products (3)

cpe:2.3:a:gitlab:gitlab:16.4.3:*:*:*:enterprise:*:*:*
cpe:2.3:a:gitlab:gitlab:16.5.3:*:*:*:enterprise:*:*:*
cpe:2.3:a:gitlab:gitlab:16.6.1:*:*:*:enterprise:*:*:*

More vulnerabilities in Gitlab

CVE-2024-45409 — Critical (CVSS 10.0): The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <=…
CVE-2023-7028 — Critical (CVSS 10.0): An issue has been discovered in GitLab CE/EE affecting all versions from 16.1 prior to 16.1.6, 16.2 prior to 16.2.9,…
CVE-2023-2825 — Critical (CVSS 10.0): An issue has been discovered in GitLab CE/EE affecting only version 16.0.0. An unauthenticated malicious user can use a…
CVE-2022-0735 — Critical (CVSS 10.0): An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.6.5, all versions…
CVE-2021-22205 — Critical (CVSS 10.0): An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.9. GitLab was not properly…
CVE-2019-9174 — Critical (CVSS 10.0): An issue was discovered in GitLab Community and Enterprise Edition before 11.6.10, 11.7.x before 11.7.6, and 11.8.x…

All CVEs affecting Gitlab →

Other CWE-863 (Incorrect Authorization) vulnerabilities

CVE-2026-48286 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9396 and earlier are affected by an Incorrect Authorization…
CVE-2026-48303 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by an Incorrect Authorization…
CVE-2026-44330 — Critical (CVSS 10.0): free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the…
CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
CVE-2026-32213 — Critical (CVSS 10.0): Improper authorization in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-863 (Incorrect Authorization) vulnerabilities →