Bug 2499693 (CVE-2026-50151)

Summary: CVE-2026-50151 oras-go: oras-go: Credential forwarding via unvalidated Location header during blob upload
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: eglynn, gparvin, jjoyce, jpretori, jschluet, lhh, mburns, mgarciac, rhaigner
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in oras-go. During the monolithic blob upload process, oras-go reuses the Authorization header for subsequent requests, even if a malicious registry provides a cross-host Location header. This vulnerability allows an attacker-controlled endpoint to receive the caller's credentials, leading to information disclosure. Additionally, it can enable client-side Server-Side Request Forgery (SSRF) to a cross-host target.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-07-13 14:40:53 UTC
oras-go follows a registry-controlled Location header during the monolithic blob upload flow and reuses the Authorization header from the initial POST request for the subsequent PUT request. If a malicious registry returns a cross-host Location, oras-go sends the caller's credentials to an attacker-controlled endpoint. Fixed in oras-go v2.6.1.