High [CVE-2026-19113] Unauthenticated denial of service via unbounded request body processing
This high-severity Red Hat Linux advisory covers CVE-2026-19113.
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Summary
Consul Community Edition and Consul Enterprise 1.3.0 through 2.0.2 are vulnerable to an unauthenticated denial of service in several agent HTTP API endpoints. A remote caller could cause the agent to consume substantial memory before the request was rejected.
This vulnerability, CVE-2026-19113, 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.
A remote, unauthenticated attacker could exploit several agent HTTP API endpoints by sending a request with an unbounded body. This could cause the agent to consume substantial memory, leading to a denial of service (DoS) condition.
Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-770.
- 1.3.0
- 2.0.2
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
- 2.0.3
- 1.21.17
- 1.22.11
Official advisory · high-confidence parse· fetched 1 hour 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 1 hour ago·verify at source
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