CVE-2026-19016

consul: Consul: Authorization bypass allows arbitrary session deletion via transaction API

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Severity

Moderate

Red Hat Product Security

4.2

CVSS 3.1

Review impact separately from score.

Published · August 8, 2026

Updated · August 13, 2026

Description

A flaw was found in Consul. An authenticated caller with network access to the Consul server RPC port could bypass authorization checks. This vulnerability occurs because the system did not enforce the session:write Access Control List (ACL) permission for session deletion operations submitted through the transaction API. This allows an attacker to delete arbitrary sessions without the necessary permissions, leading to unauthorized session termination.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.2
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

CWE-639 · Authorization Bypass Through User-Controlled Key