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Vulnerability · Published Jul 17, 2026 · Assigned by GitHub_M

CVE-2026-50151oras-go: credential forwarding via unvalidated Location header in blob upload

High 7.5

In plain English

A high-severity server-side request forgery in oras-go from oras-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 67.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13golang-oras-oras-gono fix listedDEBIAN-CVE-2026-50151
Debian:14golang-oras-oras-go2.6.2-1DEBIAN-CVE-2026-50151
Gooras.land/oras-go/v22.6.1GO-2026-5882
Gooras.land/oras-go/v22.6.1GHSA-jxpm-75mh-9fp7
Ubuntu:24.04:LTSgolang-oras-oras-gono fix listedUBUNTU-CVE-2026-50151
Ubuntu:26.04:LTSgolang-oras-oras-gono fix listedUBUNTU-CVE-2026-50151
Ubuntu:26.10golang-oras-oras-gono fix listedUBUNTU-CVE-2026-50151

Affected products (as reported)

VendorProductVersions
oras-project oras-go < 2.6.1

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References