What is CVE-2020-3996?

CVE-2020-3996 is a medium-severity vulnerability in VMware Velero. CVSS score: 5.5/10. Published 2020-10-22.

How severe is CVE-2020-3996?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in VMware Velero

CVE-2020-3996

Velero (prior to 1.4.3 and 1.5.2) in some instances doesn’t properly manage volume identifiers which may result in information leakage to unauthorized users.

Published 2020-10-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (26.5th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

VMware Velero
Velero — versions Velero versions 0.* and 1.* prior to 1.4.3 and 1.5.2

References

github.com/vmware-tanzu/velero/security/advisories/GHSA-72xg-3mcq-52v4 (Third Party Advisory)

Frequently asked questions

What is CVE-2020-3996?: CVE-2020-3996 is a medium-severity vulnerability in VMware Velero. CVSS score: 5.5/10. Published 2020-10-22.
How severe is CVE-2020-3996?: Medium severity. CVSS v3 base score is 5.5 out of 10.