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CVE-2023-4658

15
FAUCET Score

CVE-2023-4658 is a low-severity vulnerability in GitLab EE, affecting versions 8.13 through 16.4.2, 16.5 through 16.5.2, and 16.6.0. An attacker with guest user permissions, granted via a group, could bypass "Allowed to merge" restrictions. The attack requires low privileges and high attack complexity, with a potential impact of low integrity. There is no evidence of active exploitation, public exploit code, or inclusion in the CISA KEV catalog, though it has received some community discussion and media coverage from GitLab's security releases.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.13, < 16.4.3CPE match
cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
>= 16.5, < 16.5.3CPE match
cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
>= 16.6, < 16.6.1CPE match
cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
>= 8.13.0, < 16.4.3CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
>= 16.5.0, < 16.5.3CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.1LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 11th percentile among its peer group of 1,638 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gitlab.com / gitlab-org/gitlab/-/issues/423835
Broken LinkVendor Advisory
hackerone.com / reports/2104540
Permissions RequiredThird Party Advisory