Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Patch available
Direct vendor intelligence
Authoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
1 current
CVE-2023-2121 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityhashicorp: html injection into web ui
11 known affected
The vendor explicitly identifies these products as affected by this CVE.
openshift4/ose-installer as a component of Red Hat OpenShift Container Platform 4
ocs4/cephcsi-rhel8 as a component of Red Hat Openshift Container Storage 4
ocs4/mcg-rhel8-operator as a component of Red Hat Openshift Container Storage 4
ocs4/ocs-rhel8-operator as a component of Red Hat Openshift Container Storage 4
ocs4/rook-ceph-rhel8-operator as a component of Red Hat Openshift Container Storage 4
odf4/mcg-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
odf4/ocs-client-rhel8-operator as a component of Red Hat Openshift Data Foundation 4
odf4/odf-multicluster-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
odf4/odf-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
odf4/odr-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
odf4/rook-ceph-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
Summary
A flaw was found in HashiCorp Vault and Vault Enterprise, where they are vulnerable to Cross-site scripting caused by improper validation of user-supplied input by the key-value v2 (kv-v2) diff viewer. A remote, authenticated attacker can inject malicious script into a Web page which would be executed in a victim's Web browser within the security context of the hosting Web site once the page is viewed. This flaw allows an attacker to steal the victim's cookie-based authentication credentials.
Remediation
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Optional official sources
National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.
Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.
Official European source
ENISA European Vulnerability Database
Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.
1 current
ENISA EUVD identifier
EUVD-2023-1807
No EUVD known-exploited evidence
ENISA has published the identifier mapping but no EUVD description has been stored yet.
EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Patch available
01
What, why and how
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.
What
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.
Why
Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.
How
An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
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.
Why
Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.
How
An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No confirmed evidence
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.None recorded
No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
Likely attack path
a network path → Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVSS vector ?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkCWE-79
A
Official authority intelligence
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2023-1807Official EUVD mapping
0 linked advisory records.
Official EUVD recordBSI · German · WID-SEC-W-2023-1408Hashicorp Vault: Schwachstelle ermöglicht Cross-Site Scripting
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Hashicorp Vault ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen.
Operational remediation based on structured source evidence.
Status ?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
openshift4/ose-installer as a component of Red Hat OpenShift Container Platform 4; ocs4/cephcsi-rhel8 as a component of Red Hat Openshift Container Storage 4; ocs4/mcg-rhel8-operator as a component of Red Hat Openshift Container Storage 4; ocs4/ocs-rhel8-operator as a component of Red Hat Openshift Container Storage 4; ocs4/rook-ceph-rhel8-operator as a component of Red Hat Openshift Container Storage 4; odf4/mcg-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/ocs-client-rhel8-operator as a component of Red Hat Openshift Data Foundation 4; odf4/odf-multicluster-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/odf-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/odr-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/rook-ceph-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
Fixed
odf4/ocs-rhel9-operator@sha256:36a3587297be43c27a0348efc2ce0bd6d5cb4ff5447206e07770b78c6804d827_ppc64le as a component of RHODF 4.14 for RHEL 9; odf4/ocs-rhel9-operator@sha256:d83c01e9498460d577809a37bae6c4a5e8a908209ff5e3541e8453aff29d378b_amd64 as a component of RHODF 4.14 for RHEL 9; odf4/ocs-rhel9-operator@sha256:e5d0c68cad94e04ad024ab91c05c04606b166d30e2c81a5414b4517195878bc3_arm64 as a component of RHODF 4.14 for RHEL 9; odf4/ocs-rhel9-operator@sha256:ed46de26d5f1383b2c2924535cca7af2837e6ebbffd576b20939660facd70dc7_s390x as a component of RHODF 4.14 for RHEL 9
Action
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 9 Jun 2023 · Last source change 6 Jan 2025, 18:15 UTC · CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source ?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2023-1807
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after enrichment
Core structured fields are present and their contributing authorities are shown above.
Affected versionsThe structured affected or fixed version information changed.
Before
openshift4/ose-installer as a component of Red Hat OpenShift Container Platform 4; ocs4/cephcsi-rhel8 as a component of Red Hat Openshift Container Storage 4; ocs4/mcg-rhel8-operator as a component of Red Hat Openshift Container Storage 4; ocs4/ocs-rhel8-operator as a component of Red Hat Openshift Container Storage 4; ocs4/rook-ceph-rhel8-operator as a component of Red Hat Openshift Container Storage 4; odf4/mcg-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/ocs-client-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/odf-multicluster-rhel8-operator as a component of Red Hat Openshift Data Foundation 4; odf4/odf-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/odr-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/rook-ceph-rhel8-operator as a component of Red Hat Openshift Data Foundation 4 · Fixed: odf4/ocs-rhel9-operator@sha256:36a3587297be43c27a0348efc2ce0bd6d5cb4ff5447206e07770b78c6804d827_ppc64le as a component of RHODF 4.14 for RHEL 9; odf4/ocs-rhel9-operator@sha256:d83c01e9498460d577809a37bae6c4a5e8a908209ff5e3541e8453aff29d378b_amd64 as a component of RHODF 4.14 for RHEL 9; odf4/ocs-rhel9-operator@sha256:e5d0c68cad94e04ad024ab91c05c04606b166d30e2c81a5414b4517195878bc3_arm64 as a component of RHODF 4.14 for RHEL 9; odf4/ocs-rhel9-operator@sha256:ed46de26d5f1383b2c2924535cca7af2837e6ebbffd576b20939660facd70dc7_s390x as a component of RHODF 4.14 for RHEL 9
After
openshift4/ose-installer as a component of Red Hat OpenShift Container Platform 4; ocs4/cephcsi-rhel8 as a component of Red Hat Openshift Container Storage 4; ocs4/mcg-rhel8-operator as a component of Red Hat Openshift Container Storage 4; ocs4/ocs-rhel8-operator as a component of Red Hat Openshift Container Storage 4; ocs4/rook-ceph-rhel8-operator as a component of Red Hat Openshift Container Storage 4; odf4/mcg-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/ocs-client-rhel8-operator as a component of Red Hat Openshift Data Foundation 4; odf4/odf-multicluster-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/odf-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/odr-rhel9-operator as a component of Red Hat Openshift Data Foundation 4; odf4/rook-ceph-rhel9-operator as a component of Red Hat Openshift Data Foundation 4 · Fixed: odf4/ocs-rhel9-operator@sha256:36a3587297be43c27a0348efc2ce0bd6d5cb4ff5447206e07770b78c6804d827_ppc64le as a component of RHODF 4.14 for RHEL 9; odf4/ocs-rhel9-operator@sha256:d83c01e9498460d577809a37bae6c4a5e8a908209ff5e3541e8453aff29d378b_amd64 as a component of RHODF 4.14 for RHEL 9; odf4/ocs-rhel9-operator@sha256:e5d0c68cad94e04ad024ab91c05c04606b166d30e2c81a5414b4517195878bc3_arm64 as a component of RHODF 4.14 for RHEL 9; odf4/ocs-rhel9-operator@sha256:ed46de26d5f1383b2c2924535cca7af2837e6ebbffd576b20939660facd70dc7_s390x as a component of RHODF 4.14 for RHEL 9
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
CVE-2023-2121: Vault’s KV Diff Viewer Allowed for HTML Injection | BlackTree
