What is CVE-2020-10956?

CVE-2020-10956 is a critical-severity vulnerability in GitLab, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2020-03-27.

How severe is CVE-2020-10956?

Critical severity. CVSS v3 base score is 9.8 out of 10.

SSRF in GitLab

CVE-2020-10956

GitLab 8.10 and later through 12.9 is vulnerable to an SSRF in a project import note feature.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2020-03-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (72.4th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

GitLab

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

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/ (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2020-10956?: CVE-2020-10956 is a critical-severity vulnerability in GitLab, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2020-03-27.
How severe is CVE-2020-10956?: Critical severity. CVSS v3 base score is 9.8 out of 10.