CVE-2026-27145 Affecting harbor-registry package, versions <3.1.1-r4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CHAINGUARDLATEST-HARBORREGISTRY-17164969
- published4 Jun 2026
- disclosed2 Jun 2026
Introduced: 2 Jun 2026
NewCVE-2026-27145 (opens in a new tab)How to fix?
Upgrade Chainguard harbor-registry to version 3.1.1-r4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream harbor-registry package and not the harbor-registry package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname's label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.