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Fencer Vulns
high 8.2

CVE-2020-16251 json

HashiCorp Vault Authentication bypass

published 2020-08-26 6 y ago modified 2026-09-08 2 mo ago also BIT-vault-2020-16251 , EUVD-2024-0249 , GHSA-4mp7-2m29-gqxf , GO-2024-2488

cvss
8.2
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

HashiCorp Vault and Vault Enterprise versions 0.8.3 and newer, when configured with the GCP GCE auth method, may be vulnerable to authentication bypass. Fixed in 1.2.5, 1.3.8, 1.4.4, and 1.5.1.

Patch / fix

  • go github.com/hashicorp/vault 1.2.5, 1.3.8, 1.4.4, 1.5.1
  • bitnami vault 1.2.5, 1.3.8, 1.4.4, 1.5.1
  • hashicorp vault 1.2.5, 1.3.8, 1.4.4, 1.5.1
  • vault Alpine 3.12 1.4.7-r0
  • vault Alpine 3.18, Alpine 3.17, Alpine 3.16 +3 more 1.5.4-r0

alpine advisories ALPINE-CVE-2020-16251

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2020-16251 updated cvss 8.2

vault: GCP Auth Method Allows Authentication Bypass

  • Red Hat Openshift Container Storage 4 ocs4/cephcsi-rhel8, ocs4/mcg-rhel8-operator, ocs4/ocs-rhel8-operator, ocs4/rook-ceph-rhel8-operator
    affected: no fix planned “Out of support scope”
  • Red Hat Openshift Data Foundation 4 odf4/odf-multicluster-rhel9-operator
    affected: no fix planned “Will not fix”
  • Red Hat OpenShift Container Platform 4.13 openshift4/ztp-site-generate-rhel8 v4.13.0-45, openshift4/baremetal-hardware-event-proxy-rhel8 v4.13.0-21, openshift4/bare-metal-event-relay-rhel8-operator v4.13.0-42, openshift4/bare-metal-event-relay-operator-bundle v4.13.0-39, openshift4/topology-aware-lifecycle-manager-precache-rhel8 v4.13.0-45, openshift4/topology-aware-lifecycle-manager-recovery-rhel8 v4.13.0-43, +2 more
    fixed: vendor fix RHSA-2023:2138
  • Red Hat RHODF 4.13 for RHEL 9 odf4/odf-rhel9-operator v4.13.0-24
    fixed: vendor fix RHSA-2023:3742
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/logging-loki-rhel8 Red Hat OpenShift Container Platform 4 openshift4/ose-installer Red Hat Openshift Data Foundation 4 odf4/cephcsi-rhel9, odf4/mcg-rhel9-operator, odf4/ocs-rhel9-operator, odf4/odr-rhel8-operator, odf4/rook-ceph-rhel9-operator Red Hat RHODF 4.13 for RHEL 9 odf4/cephcsi-rhel9 v4.13.0-35, odf4/mcg-cli-rhel9 v4.13.0-17, odf4/mcg-core-rhel9 v4.13.0-41, odf4/odf-console-rhel9 v4.13.0-85, odf4/mcg-rhel9-operator v4.13.0-41, odf4/ocs-rhel9-operator v4.13.0-67, +17 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

Exploit prediction

2.83% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
NVD 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
OSV 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Affected packages

ecosystem package affected fixed in
go github.com/hashicorp/vault
>=0.8.3, <1.2.5
>=1.3.0, <1.3.8
>=1.4.0, <1.4.4
>=1.5.0, <1.5.1
1.2.5
1.3.8
1.4.4
1.5.1
bitnami vault
>=0.8.3, <1.2.5
>=1.3.0, <1.3.8
>=1.4.0, <1.4.4
>=1.5.0, <1.5.1
1.2.5
1.3.8
1.4.4
1.5.1

Classification

Weakness

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.