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CVE-2023-2121

Vault’s KV Diff Viewer Allowed for HTML Injection

MEDIUM
5.4
CVSS Score
Published: June 9, 2023 at 04:59 PM UTC
Updated: June 17, 2026 at 05:51 AM UTC
1 product affected across 1 vendorVault

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vault· Hashicorp
95%
v < 1.11.111.10.0 ≤ v < 1.11.01.11.0 ≤ v < 1.11.111.12.0 ≤ v < 1.12.71.13.0 ≤ v < 1.13.31.10.01.11.01.12.01.13.0
Affected range stops below 1.11.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.11.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.12.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.13.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://discuss.hashicorp.com/t/hcsec-2023-17-vault-s-kv-diff-viewer-allowed-html-injection/54814

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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