How severe is CVE-2021-30476?

CVE-2021-30476 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-30476 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30476?

CVE-2021-30476 affects Hashicorp Terraform Provider. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30476?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-30476 published?

CVE-2021-30476 was published on 2021-04-22 and last updated on 2026-06-17.

CVE-2021-30476

CVE-2021-30476 is a critical-severity vulnerability in Hashicorp Terraform Provider with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Hashicorp Terraform Provider
Published: 2021-04-22
Last modified: 2026-06-17

Description

HashiCorp Terraform’s Vault Provider (terraform-provider-vault) did not correctly configure GCE-type bound labels for Vault’s GCP auth method. Fixed in 2.19.1.

Frequently asked questions

What is CVE-2021-30476?: HashiCorp Terraform’s Vault Provider (terraform-provider-vault) did not correctly configure GCE-type bound labels for Vault’s GCP auth method. Fixed in 2.19.1.
How severe is CVE-2021-30476?: CVE-2021-30476 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-30476 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30476?: CVE-2021-30476 affects Hashicorp Terraform Provider. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30476?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-30476 published?: CVE-2021-30476 was published on 2021-04-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hashicorp:terraform_provider:*:*:*:*:*:vault:*:*

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