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Fencer Vulns
high 7.5

CVE-2026-50151 json

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

published 2026-07-01 4 mo ago modified 2026-10-24 15 d ago also GHSA-jxpm-75mh-9fp7 , GO-2026-5882 , EUVD-2026-45264

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

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.

Patch / fix

  • go oras.land/oras-go/v2 2.6.1
  • linuxfoundation oras 2.6.1
  • golang-oras-oras-go Debian 14 2.6.2-1

debian advisories DEBIAN-CVE-2026-50151

  • helm Linux Micro 6.1 4.3.0-slfo.1.1_1.1
  • helm SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 4.3.0-160000.1.1
  • helm SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 3.21.3-160000.2.1
  • helm Linux Micro 6.1 3.21.3-slfo.1.1_2.1
  • helm Linux Micro 6.0 3.21.3-2.1
  • c-ares Linux Micro 6.2 1.34.8-160000.1.1
  • helm SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +10 more 3.21.3-150000.1.93.1
  • govulncheck-vulndb SLES 16.0, SLES for SAP applications 16.0 0.0.20260727T201416-160000.1.1

suse advisories SUSE-SU-2026:24282-1SUSE-SU-2026:23973-1SUSE-SU-2026:23984-1SUSE-SU-2026:23506-1SUSE-SU-2026:23688-1SUSE-SU-2026:23522-1

  • helm openSUSE Leap 16.0 4.3.0-160000.1.1
  • helm openSUSE Leap 16.0 3.21.3-160000.2.1
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260727T201416-160000.1.1
  • trivy openSUSE Leap 16.0 0.72.0-160000.2.1
  • helm openSUSE Tumbleweed 4.2.3-2.1
  • helm3 openSUSE Tumbleweed 3.21.3-2.1
  • trivy openSUSE Tumbleweed 0.72.0-2.1

opensuse advisories openSUSE-SU-2026:21983-1openSUSE-SU-2026:21809-1openSUSE-SU-2026:21551-1openSUSE-SU-2026:21395-1openSUSE-SU-2026:11291-1openSUSE-SU-2026:11292-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-50151 updated cvss 5.9

oras-go: oras-go: Credential forwarding via unvalidated Location header during blob upload

  • Red Hat OpenShift Service Mesh 3 openshift-service-mesh/istio-rhel9-operator Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-main-rhel9, advanced-cluster-security/rhacs-rhel9-operator Red Hat OpenShift AI (RHOAI) rhoai/odh-ai-gateway-operator-rhel9, rhoai/odh-ogx-module-operator-rhel9, rhoai/odh-kserve-module-operator-rhel9 Red Hat OpenShift Container Platform 4 openshift4/ose-console, openshift4/cnf-tests-rhel8, openshift4/ose-console-rhel9, openshift4/ose-helm-operator, openshift4/ose-ansible-operator, openshift4/ose-olm-rukpak-rhel8, +17 more Red Hat OpenShift Container Platform 5 openshift5/ose-console-rhel9, openshift5/metallb-rhel9-operator Red Hat OpenStack Platform 16.2 rhosp-rhel8/osp-director-operator-bundle
    +2 more products
    Red Hat OpenStack Platform 17.1 rhosp-rhel9/osp-director-operator-bundle Red Hat OpenStack Platform 18.0 rhoso-operators/openstack-operator-bundle, rhoso-operators/rabbitmq-cluster-rhel9-operator
    affected: workaround, no fix available “Upgrade to oras-go v2.6.1 or later.”
  • Red Hat Multicluster Global Hub 1.4.9 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1788375682
    fixed: vendor fix “Upgrade to oras-go v2.6.1 or later.” RHSA-2026:67516
  • Red Hat Multicluster Global Hub 1.5.8 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1789515639
    fixed: vendor fix “Upgrade to oras-go v2.6.1 or later.” RHSA-2026:71597
  • Red Hat Multicluster Global Hub 1.6.6 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1790086248
    fixed: vendor fix “Upgrade to oras-go v2.6.1 or later.” RHSA-2026:73419
  • Red Hat Multicluster Global Hub 1.7.4 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1788376193
    fixed: vendor fix “Upgrade to oras-go v2.6.1 or later.” RHSA-2026:67842
  • Red Hat Multicluster Global Hub 1.8.2 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1788441983, multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1790639009
    fixed: vendor fix “Upgrade to oras-go v2.6.1 or later.” RHSA-2026:68515
  • Red Hat Advanced Cluster Management for Kubernetes 2.13 rhacm2/multicloud-integrations-rhel9 1784652040, rhacm2/multicluster-operators-channel-rhel9 1784741269, rhacm2/multicluster-operators-subscription-rhel9 1784740143
    fixed: vendor fix “Upgrade to oras-go v2.6.1 or later.” RHSA-2026:47737
  • Red Hat Gatekeeper 3 gatekeeper/gatekeeper-rhel9
    not affected: vulnerable code cannot be controlled by adversary
show 1 more
  • Red Hat Multicluster Global Hub 1.4.9 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1788355439, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1788355599, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1788355417, multicluster-globalhub/multicluster-globalhub-operator-bundle 1788377695, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 1788200958 Red Hat Multicluster Global Hub 1.5.8 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1789515408, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1789515288, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1789478830, multicluster-globalhub/multicluster-globalhub-operator-bundle 1789533983, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 1789255903 Red Hat Multicluster Global Hub 1.6.6 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1790085494, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1790086176, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1790085268, multicluster-globalhub/multicluster-globalhub-operator-bundle 1790379995, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 1790379115 Red Hat Multicluster Global Hub 1.7.4 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1788377473, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1788377424, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1788372439, multicluster-globalhub/multicluster-globalhub-operator-bundle 1788503575, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 1788200952 Red Hat Multicluster Global Hub 1.8.2 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1788359470, multicluster-globalhub/multicluster-globalhub-agent-rhel9 1790638612, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1788359454, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1788359461, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1790638386, multicluster-globalhub/multicluster-globalhub-operator-bundle 1788496240, +3 more Red Hat Advanced Cluster Management for Kubernetes 2.13 rhacm2/thanos-rhel9 1784677282, rhacm2/acm-cli-rhel9 1784904649, rhacm2/console-rhel9 1785078581, rhacm2/prometheus-rhel9 1785022718, rhacm2/acm-grafana-rhel9 1784591168, rhacm2/acm-search-v2-rhel9 1784569967, +35 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/oras-project/oras-go/security/advisories/GHSA-jxpm-75mh-9fp7 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
go oras.land/oras-go/v2
<2.6.1
2.6.1

Affected products

  • oras-project oras-go

Classification

Weakness
  • CWE-918 Server-Side Request Forgery

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.