What is CVE-2020-10978?

CVE-2020-10978 is a medium-severity vulnerability in GitLab. CVSS score: 5.3/10. Published 2020-04-08.

How severe is CVE-2020-10978?

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

Vulnerability in GitLab

CVE-2020-10978

GitLab EE/CE 8.11 to 12.9 is leaking information on Issues opened in a public project and then moved to a private project through Web-UI and GraphQL API.

Published 2020-04-08 · 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: 0.012 (66.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

GitLab

References

about.gitlab.com/releases/categories/releases/ (Release Notes, Vendor Advisory)
about.gitlab.com/releases/2020/03/26/security-release-12-dot-9-dot-1-released/ (Vendor Advisory)

Frequently asked questions

What is CVE-2020-10978?: CVE-2020-10978 is a medium-severity vulnerability in GitLab. CVSS score: 5.3/10. Published 2020-04-08.
How severe is CVE-2020-10978?: Medium severity. CVSS v3 base score is 5.3 out of 10.