What is CVE-2026-4404?

CVE-2026-4404 is a critical-severity vulnerability in Harbor, classified under Use of Hard-coded Credentials. CVSS score: 9.4/10. Published 2026-03-23.

How severe is CVE-2026-4404?

Critical severity. CVSS v3 base score is 9.4 out of 10.

Vulnerability in Harbor

CVE-2026-4404

Use of hard coded credentials in GoHarbor Harbor version 2.15.0 and below, allows attackers to use the default password and gain access to the web UI.

Published 2026-03-23 · last modified 2026-08-10.

CVSS v3 metric

CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.006 (46.2th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001

Affected products

Harbor — versions 0.1.0
Linuxfoundation Harbor

Weakness classification (CWE)

References

goharbor.io/docs/1.10/install-config/run-installer-script/ (Product)
github.com/goharbor/harbor/issues/1937 (Issue Tracking)
cwe.mitre.org/data/definitions/1393.html (Not Applicable)
github.com/goharbor/harbor/pull/22751 (Issue Tracking)
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)

Frequently asked questions

What is CVE-2026-4404?: CVE-2026-4404 is a critical-severity vulnerability in Harbor, classified under Use of Hard-coded Credentials. CVSS score: 9.4/10. Published 2026-03-23.
How severe is CVE-2026-4404?: Critical severity. CVSS v3 base score is 9.4 out of 10.