CVE-2026-105626
Awaiting Analysis Awaiting Analysis - Queue

Denial of Service in HashiCorp Consul HTTP API

Publication date: 2026-10-26

Last updated on: 2026-10-26

Assigner: HashiCorp Inc.

Description
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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-26
Last Modified
2026-10-26
Generated
2026-10-26
AI Q&A
2026-10-26
EPSS Evaluated
N/A
NVD
CVE-2026-105626
EUVD
EUVD-2026-110056

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
HashiCorp Consul 0.6.0
HashiCorp Consul Enterprise 0.6.0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

HashiCorp Consul and Consul Enterprise are vulnerable to a denial of service in the HTTP API. An unauthenticated attacker could exploit this to exhaust memory on a Consul agent, causing it to crash or become unresponsive.

Impact Analysis

This vulnerability could lead to service disruption by crashing Consul agents, affecting the availability of your Consul-based services. It may cause downtime or require manual intervention to restore functionality.

Mitigation Strategies
  • Upgrade to Consul Community Edition 2.1.0 or Consul Enterprise 2.1.0 or 1.21.19 or later versions to address the vulnerability.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-105626. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart