How severe is CVE-2019-12291?

CVE-2019-12291 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-12291 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12291?

CVE-2019-12291 affects Hashicorp Consul. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12291?

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

When was CVE-2019-12291 published?

CVE-2019-12291 was published on 2019-06-06 and last updated on 2026-06-17.

CVE-2019-12291

CVE-2019-12291 is a high-severity vulnerability in Hashicorp Consul with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 6.4
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Hashicorp Consul
Published: 2019-06-06
Last modified: 2026-06-17

Description

HashiCorp Consul 1.4.0 through 1.5.0 has Incorrect Access Control. Keys not matching a specific ACL rule used for prefix matching in a policy can be deleted by a token using that policy even with default deny settings configured.

Frequently asked questions

What is CVE-2019-12291?: HashiCorp Consul 1.4.0 through 1.5.0 has Incorrect Access Control. Keys not matching a specific ACL rule used for prefix matching in a policy can be deleted by a token using that policy even with default deny settings configured.
How severe is CVE-2019-12291?: CVE-2019-12291 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-12291 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12291?: CVE-2019-12291 affects Hashicorp Consul. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-12291 published?: CVE-2019-12291 was published on 2019-06-06 and last updated on 2026-06-17.

References

https://github.com/hashicorp/consul/issues/5888

Affected products (1)

cpe:2.3:a:hashicorp:consul:*:*:*:*:*:*:*:*

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