CVE-2026-50151

oras-go: credential forwarding via unvalidated Location header in blob upload

HIGH
7.5
CVSS Score
Published: July 17, 2026 at 07:41 PM UTC
Updated: October 24, 2026 at 08:10 PM UTC
2 products affected across 2 vendorsOrasOras

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, registry/remote/repository.go in blobStore.completePushAfterInitialPost follows a registry-controlled Location header during monolithic blob upload and reuses the Authorization header from the initial POST request for the subsequent PUT request, allowing a malicious registry to return a cross-host Location and receive the caller's credentials at an attacker-controlled endpoint. This issue is fixed in version 2.6.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.6.1
Affected range stops below 2.6.1, so it looks safe — our inference, not a vendor statement
v < 2.6.1
Affected range stops below 2.6.1, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_CONFIRMExploitMitigationVendor Advisory
Source: cverecord
https://github.com/oras-project/oras-go/security/advisories/GHSA-jxpm-75mh-9fp7
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/oras-project/oras-go/pull/1152
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/oras-project/oras-go/releases/tag/v2.6.1

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-918

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