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Vulnerabilities CVE-2026-15972

CVE-2026-15972

High
Open
TLP:CLEAR

Unauthenticated denial of service via unbounded external gRPC connection acceptance

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Description

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.

Details

CVSS Score
7.5
EPSS Score
0.39%

31.4th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence
90%
Published
Aug 7, 2026
Last Modified
Aug 10, 2026
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