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Fencer Vulns
medium 4.3

CVE-2023-2121 json

Vault’s KV Diff Viewer Allowed for HTML Injection

published 2023-06-09 3 y ago modified 2026-09-10 1 mo ago also BIT-vault-2023-2121 , EUVD-2023-1807 , GHSA-gq98-53rq-qr5h , GO-2023-1849

cvss
4.3
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 36%
public exploits
0
none known

Summary

Vault and Vault Enterprise's (Vault) key-value v2 (kv-v2) diff viewer allowed HTML injection into the Vault web UI through key values. This vulnerability, CVE-2023-2121, is fixed in Vault 1.14.0, 1.13.3, 1.12.7, and 1.11.11.

Patch / fix

  • go github.com/hashicorp/vault 1.11.11, 1.12.7, 1.13.3
  • bitnami vault 1.11.11, 1.12.7, 1.13.3
  • HashiCorp Vault 1.11.0, 1.11.11, 1.12.7, 1.13.3
  • HashiCorp Vault Enterprise 1.11.0, 1.11.11, 1.12.7, 1.13.3

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-2023-2121 updated cvss 4.3

hashicorp: html injection into web ui

  • Red Hat OpenShift Container Platform 4 openshift4/ose-installer
    affected: no fix planned “Will not fix”
  • 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/mcg-rhel9-operator, odf4/odf-rhel8-operator, odf4/odr-rhel9-operator, odf4/rook-ceph-rhel9-operator, odf4/ocs-client-rhel8-operator, odf4/odf-multicluster-rhel9-operator
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat RHODF 4.14 for RHEL 9 odf4/ocs-rhel9-operator v4.14.0-67
    fixed: vendor fix RHSA-2023:6832
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/logging-loki-rhel8 Red Hat OpenShift Container Platform 4 openshift4/topology-aware-lifecycle-manager-rhel8-operator Red Hat Openshift Data Foundation 4 odf4/cephcsi-rhel9 Red Hat RHODF 4.14 for RHEL 9 odf4/cephcsi-rhel9 v4.14.0-29, odf4/mcg-cli-rhel9 v4.14.0-44, odf4/mcg-core-rhel9 v4.14.0-63, odf4/odf-console-rhel9 v4.14.0-77, odf4/mcg-rhel9-operator v4.14.0-43, odf4/odf-rhel9-operator v4.14.0-18, +19 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
none
Automatable
no
Technical impact
partial
Assessed
22 mo ago

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
GitHub 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
OSV 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
go github.com/hashicorp/vault
<1.11.11
>=1.12.0, <1.12.7
>=1.13.0, <1.13.3
1.11.11
1.12.7
1.13.3
bitnami vault
<1.11.11
>=1.12.0, <1.12.7
>=1.13.0, <1.13.3
1.11.11
1.12.7
1.13.3

Affected products

  • HashiCorp Vault
  • HashiCorp Vault Enterprise

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

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.