CVE-2026-105626

HIGH 7.5

Consul vulnerable to a denial of service in HTTP APIs

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

HashiCorp Consul and Consul Enterprise are vulnerable to a denial of service in the HTTP API that may allow an unauthenticated attacker to exhaust memory on a Consul agent. This vulnerability (CVE-2026-105626) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.

CWE	CWE-770
Vendor	hashicorp
Product	consul
Published	Oct 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

HashiCorp / Consul

0.6.0 < 2.1.0

HashiCorp / Consul Enterprise

0.6.0 < 2.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

discuss.hashicorp.com: https://discuss.hashicorp.com/t/hcsec-2026-48-consul-vulnerable-to-a-denial-of-service-in-http-apis/77913

Credits

This issue was reported to HashiCorp by Immad Sahin of ZeroTrail.