Medium [CVE-2026-19014] Denial of Service via uncontrolled resource consumption in Connect authorization endpoint
This medium-severity Red Hat Linux advisory covers CVE-2026-19014.
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Summary
Consul Community Edition and Consul Enterprise 1.17.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect authorization endpoint that may allow a caller to grow the agent's intention-match cache without bound, defeating the operator's cache-disable configuration.
This vulnerability, CVE-2026-190124, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3. A flaw was found in Consul.
The primary consequence is a Denial of Service (DoS) due to unbounded resource consumption. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-770.
- 1.17.0
- 2.0.2
Official advisory · high-confidence parse· fetched 12 hours ago·verify at source
- 2.0.3
- 1.21.17
- 1.22.11
Official advisory · high-confidence parse· fetched 12 hours ago·verify at source
Mitigation
Upgrade to a fixed release: 2.0.3, 1.21.17, 1.22.11. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 12 hours ago·verify at source
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