CVE-2026-19015

Uncontrolled resource consumption in the Consul Connect CA roots endpoint

State: Published
Severity: 5.3 Medium
Published: Aug 7, 2026
Updated: Aug 10, 2026
Reserved: Aug 5, 2026

Description

Consul Community Edition and Consul Enterprise 1.2.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect CA roots endpoint that may allow a remote caller to grow the agent's Connect CA roots cache without bound, defeating the operator's cache-disable configuration. This vulnerability, CVE-2026-19015, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	HashiCorp

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
ConsulHashiCorp	1.2.0 to before 2.0.3Affected
Consul EnterpriseHashiCorp	1.2.0 to before 2.0.3Affectedfrom 1.21.17Not affectedfrom 1.22.11Not affected

References

https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629

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