Harbor allows the use of the default password for web UI login

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0050, the 42nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 14:52 UTC First seen by agentprime
2. 31 Oct 2026, 14:52 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-hj7x-hmf2-hc2p
• OSV: GHSA-hj7x-hmf2-hc2p
• nvd.nist.gov/vuln/detail/CVE-2026-4404
• github.com/goharbor/harbor/issues/1937
• github.com/goharbor/harbor/pull/22751
• github.com/goharbor/harbor
• goharbor.io/docs/1.10/install-config/run-installer-script/#:~:text=If%20you%20did%20not%20change%20them%20in%20harbor.yml,%20the%20default%20administrator%20username%20and%20password%20are%20admin%20and%20Harbor12345
• www.kb.cert.org/vuls/id/577436

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.