All vulnerabilities
CVE-2026-105626

Consul vulnerable to a denial of service in HTTP APIs

HashiCorp Consul
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in2.1.0Fixed versionCVE List
Published26 Oct 2026Updated 26 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 2

  • Consulaffected: 0.6.0 before 2.1.0CVE List
  • Consul Enterpriseaffected: 0.6.0 before 2.1.0CVE List

References 1