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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00482.

Exploitation poc

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
oras-project oras-go affected
Version Status Constraints
< 2.6.1 affected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

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Project Subscriptions

No data.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-jxpm-75mh-9fp7 oras-go blob upload vulnerable to credential forwarding via unvalidated Location header
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/oras-project/oras-go/commit/4683c46ef078091544f5f55fd25102f002806991 cve-icon
https://github.com/oras-project/oras-go/pull/1152 cve-icon
https://github.com/oras-project/oras-go/releases/tag/v2.6.1 cve-icon
https://github.com/oras-project/oras-go/security/advisories/GHSA-jxpm-75mh-9fp7 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-50151 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-50151 cve-icon
History

Mon, 20 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 17 Jul 2026 20:00:00 +0000

Type Values Removed Values Added
Description 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. 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.
Title oras-go: oras-go: Credential forwarding via unvalidated Location header during blob upload oras-go: credential forwarding via unvalidated Location header in blob upload
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

 cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Wed, 15 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Description 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.
Title oras-go: oras-go: Credential forwarding via unvalidated Location header during blob upload
Weaknesses CWE-522
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

threat_severity

Moderate

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-20T13:52:07.476Z

Reserved: 2026-06-03T20:54:20.431Z

Link: CVE-2026-50151

cve-icon Vulnrichment

Updated: 2026-07-20T13:51:53.015Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-01T21:35:45Z

Links: CVE-2026-50151 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-07-22T02:00:07Z

Weaknesses