CVE-2026-49349: regclient may leak authentication credentials to external blob stores

June 26, 2026

Credentials for a registry may be inadvertently leaked to external servers. A prerequisite for this attack is a malicious registry server, a malicious blob store, or a registry that does not restrict the external URLs for foreign blobs.

References

github.com/advisories/GHSA-qvqc-4c52-x6qp
github.com/regclient/regclient/security/advisories/GHSA-qvqc-4c52-x6qp
nvd.nist.gov/vuln/detail/CVE-2026-49349

Code Behaviors & Features

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