CVE-2026-15972

EUVD-2026-54612

07.08.2026, 20:16

Consul Community Edition and Consul Enterprise 1.13.0 through 2.0.2 are vulnerable to an unauthenticated denial of service through unbounded connection acceptance on the external gRPC listeners. A remote attacker may exhaust agent file descriptors, goroutines, and memory by opening many incomplete connections, potentially preventing legitimate clients from connecting. This vulnerability, CVE-2026-15972, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
HashiCorp	CNA	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 32.45%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
hashicorp	consul	1.13.0 ≤ 𝑥 < 2.0.3	CNA

Ubuntu Releases

Ubuntu Product

Codename

consul

bionic	needs-triage
focal	needs-triage
jammy	needs-triage
noble	dne
resolute	dne

Common Weakness Enumeration

CWE-770 - Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References

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