What’s Vulnerable › Vulnerabilities

CVE-2020-28053

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-23 · updated 2026-06-17
• Weakness: CWE-863

Description

HashiCorp Consul and Consul Enterprise 1.2.0 up to 1.8.5 allowed operators with operator:read ACL permissions to read the Connect CA private key configuration. Fixed in 1.6.10, 1.7.10, and 1.8.6.

Affected products

• HashiCorp Consul: from 1.2.0 before 1.6.10; from 1.7.0 before 1.7.10; from 1.8.0 before 1.8.6 — fixed in 1.6.10, 1.7.10, 1.8.6

How to fix

Upgrade to a fixed version: HashiCorp Consul 1.6.10, 1.7.10, 1.8.6. Check the vendor advisory for mitigations.

References

• https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#186-november-19-2020
• https://security.gentoo.org/glsa/202208-09
• https://www.hashicorp.com/blog/category/consul
• https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#186-november-19-2020
• https://security.gentoo.org/glsa/202208-09
• https://www.hashicorp.com/blog/category/consul

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