How severe is CVE-2023-2121?

CVE-2023-2121 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-2121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2121?

CVE-2023-2121 primarily affects Hashicorp Vault. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-2121?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-2121 published?

CVE-2023-2121 was published on 2023-06-09 and last updated on 2026-06-17.

CVE-2023-2121

CVE-2023-2121 is a medium-severity vulnerability in Hashicorp Vault with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Hashicorp Vault
Published: 2023-06-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-2121?: 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.
How severe is CVE-2023-2121?: CVE-2023-2121 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-2121 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2121?: CVE-2023-2121 primarily affects Hashicorp Vault. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-2121?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-2121 published?: CVE-2023-2121 was published on 2023-06-09 and last updated on 2026-06-17.

References

https://discuss.hashicorp.com/t/hcsec-2023-17-vault-s-kv-diff-viewer-allowed-html-injection/54814

Affected products (2)

cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*
cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*

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