CVE-2026-19017Network attack vectorHinoki check available

File disclosure via overridable credential directory allowlist

Published Aug 7, 2026 · Updated Aug 7, 2026

Missing authorization in HashiCorp Consul and Consul Enterprise 1.18.21 through 2.0.2 allows remote authenticated users to read host files. The Vault Connect CA provider accepts JWT or AppRole credential paths from an operator-writable configuration and checks them against an overly broad directory allowlist before forwarding file contents to Vault. Exploitation requires operator:write permission and one of those Vault authentication methods; Kubernetes authentication and non-Vault CA deployments are unaffected.

CVSS severity6.8
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in HashiCorp Consul and Consul Enterprise 1.18.21 through 2.0.2 allows remote authenticated users to read host files. The Vault Connect CA provider accepts JWT or AppRole credential paths from an operator-writable configuration and checks them against an overly broad directory allowlist before forwarding file contents to Vault. Exploitation requires operator:write permission and one of those Vault authentication methods; Kubernetes authentication and non-Vault CA deployments are unaffected.

The record

CVE
CVE-2026-19017
Published
Aug 7, 2026
Updated
Aug 7, 2026
Vendor
HashiCorp
Product
Consul Enterprise
Classifications
CWE-862, CAPEC-1, T1005
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.18.21 <2.0.3 changes=[{"at":"1.21.17","status":"unaffected"},{"at":"1.22.11","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

HashiCorp · Consul Enterpriseversion=1.18.21 <2.0.3 changes=[{"at":"1.21.17","status":"unaffected"},{"at":"1.22.11","status":"unaffected"}]
HashiCorp · Consulversion=1.18.21 <2.0.3

Published CVSS scores

6.8HashiCorpCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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