What is CVE-2021-39898?

CVE-2021-39898 is a low-severity vulnerability in GitLab, classified under Information Disclosure. CVSS score: 3.7/10. Published 2021-11-05.

How severe is CVE-2021-39898?

Low severity. CVSS v3 base score is 3.7 out of 10.

Information disclosure in GitLab

CVE-2021-39898

In all versions of GitLab CE/EE since version 10.6, a project export leaks the external webhook token value which may allow access to the project which it was exported from.

Vulnerability class: Information Disclosure

Published 2021-11-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (69.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

GitLab — versions >=14.3, <14.3.1, >=14.2, <14.2.5, >=10.6, <14.1.7

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

gitlab.com/gitlab-org/gitlab/-/issues/33734 (Broken Link)
hackerone.com/reports/698068 (Permissions Required, Third Party Advisory)
gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39898.json (Vendor Advisory)

Frequently asked questions

What is CVE-2021-39898?: CVE-2021-39898 is a low-severity vulnerability in GitLab, classified under Information Disclosure. CVSS score: 3.7/10. Published 2021-11-05.
How severe is CVE-2021-39898?: Low severity. CVSS v3 base score is 3.7 out of 10.