CVE-2026-19016

Authorization bypass for session deletion in the transaction API

MEDIUM

4.2

CVSS Score

Published: August 7, 2026 at 07:18 PM UTC

Updated: August 28, 2026 at 04:02 PM UTC

1 product affected across 1 vendorConsul

Using Consul by HashiCorp?

Get instant alerts when new vulnerabilities affect Consul - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM4.2

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Consul · Hashicorp

60%

1.19.1 ≤ v < 2.0.31.19.1

Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord

https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.2MEDIUMHashiCorp

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-22

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card