CVE-2026-19016: Hashicorp Consul

Medium severity, CVSS 4.2. EPSS: 0.3% chance of exploitation in the next 30 days.

Consul Community Edition and Consul Enterprise 1.19.1 through 2.0.2 did not enforce the {{session:write}} ACL permission for session deletion operations submitted through the transaction API. An authenticated caller with network access to the Consul server RPC port could delete arbitrary sessions without holding the required permission. This vulnerability, CVE-2026-19016, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.

Affected products

• Hashicorp Consul: from 1.19.1, before 2.0.3 (fixed in 2.0.3)
• Hashicorp Consul Enterprise: from 1.19.1, before 2.0.3 (fixed in 2.0.3)

Published 2026-08-07. Last modified 2026-08-28.