Security Bulletin
Summary
Consul Community Edition and Consul Enterprise 1.18.21 through 2.0.2 are vulnerable to a partial arbitrary file read when configured to use the Vault Connect CA provider with JWT or AppRole authentication. A privileged attacker with `operator:write` permission may direct Consul to read and forward credential files outside the intended scope, potentially leading to the exfiltration of sensitive secrets from the Consul server host. This vulnerability, CVE-2026-19017, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
Vulnerability Details
CVEID: CVE-2026-19017
DESCRIPTION: The credential directory allowlist used by certain Vault auth methods was broader than intended. A caller with `operator:write` permission could update the Connect CA configuration in a way that caused Consul to read a credential file outside the intended scope and forward its contents to Vault as part of an authentication request. This may allow the caller to access sensitive files on the Consul server host that they would not otherwise be permitted to read. This issue affects deployments using the Vault Connect CA provider with the JWT or AppRole authentication method; deployments using the Kubernetes auth method are not affected. Deployments that do not use the Vault Connect CA provider are not affected.
CWE: CWE-862: Missing Authorization
CVSS Source: HashiCorp Inc.
CVSS Base score: 6.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| Consul Community Edition | affected from 1.18.21 up to 2.0.3 |
| Consul Enterprise | affected from 1.18.21 up to 2.0.3, unaffected from 1.21.17, 1.22.11 |
Remediation/Fixes
Customers should evaluate the risk associated with this issue and consider upgrading to Consul 2.0.3 or Consul Enterprise 1.21.17, 1.22.11, or 2.0.3.
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References
Acknowledgement
This issue was reported to HashiCorp by Kai Aizen / SnailSploit ("The Jailbreak Chef").
Change History
07 Aug 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
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Document Location
Worldwide
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Document Information
Modified date:
07 August 2026
Initial Publish date:
07 August 2026
UID
ibm17283001