CVE-2026-48978
Severity CVSS v4.0:
LOW
Type:
CWE-319
Cleartext Transmission of Sensitive Information
Publication date:
17/07/2026
Last modified:
17/07/2026
Description
oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, auth.Client follows the realm URL from a registry's WWW-Authenticate: Bearer challenge without validating the scheme or host, allowing a malicious or compromised registry to cause SSRF to internal networks such as http://169.254.169.254/, http://10.0.0.x/, and http://127.0.0.1/, or to downgrade a registry contacted over https:// to an http:// token endpoint in registry/remote/auth/client.go through Client.Do(), Client.fetchBearerToken(), fetchDistributionToken, and fetchOAuth2Token. This issue is fixed in version 2.6.1.
Impact
Base Score 4.0
2.10
Severity 4.0
LOW