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CVE-2023-4378

18
FAUCET Score

CVE-2023-4378 is a medium-severity vulnerability affecting GitLab CE/EE versions 11.8 through 16.1.4, 16.2 through 16.2.4, and 16.3.0. A malicious Maintainer can exploit this flaw, which stems from an incomplete fix for CVE-2022-4365, to leak the Sentry token by manipulating the Sentry error tracking settings. The vulnerability has a CVSS score of 4.3 (Medium), indicating a low attack complexity and requiring low privileges, with a potential impact of low confidentiality. There is no evidence of active exploitation, nor are there any public exploit codes available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage are minimal, with only one mention and one article published by GitLab Security.

Impacted Technologies

VendorProductVersion(s)CPE
>= 11.8, < 16.1.5CPE match
cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
>= 16.2, < 16.2.5CPE match
cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
>= 16.3, < 16.3.1CPE match
cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
>= 11.8.0, < 16.1.5CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
>= 11.8.0, < 16.1.5CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 45th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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/422134
Broken Link
hackerone.com / reports/2104591
Permissions Required