What is CVE-2021-39882?

CVE-2021-39882 is a medium-severity vulnerability in GitLab, classified under Cleartext Transmission of Sensitive Information. CVSS score: 5.3/10. Published 2021-10-05.

How severe is CVE-2021-39882?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in GitLab

CVE-2021-39882

In all versions of GitLab CE/EE, provided a user ID, anonymous users can use a few endpoints to retrieve information about any GitLab user.

Published 2021-10-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

GitLab — versions 4.3.0, >=14.3, <14.3.1, >=14.2, <14.2.5

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

gitlab.com/gitlab-org/gitlab/-/issues/297473 (Broken Link)
gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39882.json (Vendor Advisory)

Frequently asked questions

What is CVE-2021-39882?: CVE-2021-39882 is a medium-severity vulnerability in GitLab, classified under Cleartext Transmission of Sensitive Information. CVSS score: 5.3/10. Published 2021-10-05.
How severe is CVE-2021-39882?: Medium severity. CVSS v3 base score is 5.3 out of 10.