How severe is CVE-2020-12797?

CVE-2020-12797 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-12797 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12797?

CVE-2020-12797 primarily affects Hashicorp Consul. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12797?

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

When was CVE-2020-12797 published?

CVE-2020-12797 was published on 2020-06-11 and last updated on 2026-06-17.

CVE-2020-12797

CVE-2020-12797 is a medium-severity vulnerability in Hashicorp Consul with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Hashicorp Consul
Published: 2020-06-11
Last modified: 2026-06-17

Description

HashiCorp Consul and Consul Enterprise failed to enforce changes to legacy ACL token rules due to non-propagation to secondary data centers. Introduced in 1.4.0, fixed in 1.6.6 and 1.7.4.

Frequently asked questions

What is CVE-2020-12797?: HashiCorp Consul and Consul Enterprise failed to enforce changes to legacy ACL token rules due to non-propagation to secondary data centers. Introduced in 1.4.0, fixed in 1.6.6 and 1.7.4.
How severe is CVE-2020-12797?: CVE-2020-12797 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-12797 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12797?: CVE-2020-12797 primarily affects Hashicorp Consul. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12797?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12797 published?: CVE-2020-12797 was published on 2020-06-11 and last updated on 2026-06-17.

References

Affected products (2)

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

More vulnerabilities in Hashicorp Consul

CVE-2021-41805 — High (CVSS 8.8): HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4 has Incorrect Access Control.…
CVE-2021-37219 — High (CVSS 8.8): HashiCorp Consul and Consul Enterprise 1.10.1 Raft RPC layer allows non-server agents with a valid certificate signed…
CVE-2023-2816 — High (CVSS 8.7): Consul and Consul Enterprise allowed any user with service:write permissions to use Envoy extensions configured via…
CVE-2021-3121 — High (CVSS 8.6): An issue was discovered in GoGo Protobuf before 1.3.2. plugin/unmarshal/unmarshal.go lacks certain index validation,…
CVE-2024-10006 — High (CVSS 8.3): A vulnerability was identified in Consul and Consul Enterprise (“Consul”) such that using Headers in L7 traffic…
CVE-2024-10005 — High (CVSS 8.1): A vulnerability was identified in Consul and Consul Enterprise (“Consul”) such that using URL paths in L7 traffic…

All CVEs affecting Hashicorp Consul →