What is CVE-2020-13276?

CVE-2020-13276 is a high-severity vulnerability in GitLab, classified under Missing Authorization. CVSS score: 7.4/10. Published 2020-06-19.

How severe is CVE-2020-13276?

High severity. CVSS v3 base score is 7.4 out of 10.

Auth bypass in GitLab

CVE-2020-13276

User is allowed to set an email as a notification email even without verifying the new email in all previous GitLab CE/EE versions through 13.0.1

Vulnerability class: Broken Access Control

Published 2020-06-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.007 (50.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

GitLab — versions >=12.10, <12.10.7, <12.9.8, 13.0.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

gitlab.com/gitlab-org/gitlab/-/issues/25994 (Broken Link)
hackerone.com/reports/471907 (Permissions Required)
gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13276.json (Vendor Advisory)

Frequently asked questions

What is CVE-2020-13276?: CVE-2020-13276 is a high-severity vulnerability in GitLab, classified under Missing Authorization. CVSS score: 7.4/10. Published 2020-06-19.
How severe is CVE-2020-13276?: High severity. CVSS v3 base score is 7.4 out of 10.