MEDIUM

CVE-2021-4191

CVSS v3

5.3

MEDIUM

EPSS Score

80.0 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

gitlabBitnamifrom 13.0.0 · fixed in 14.6.5

Full record on NVD

Description

An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.

Technical details

Published: 2022-03-28

Frequently asked questions

What is CVE-2021-4191?

Is CVE-2021-4191 actively exploited?

Active exploitation of CVE-2021-4191 has not been confirmed. Its EPSS score was 80.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-4191?

CVE-2021-4191 has a CVSS v3 base score of 5.3 (MEDIUM severity).

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