CVE-2026-19016: CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in HashiCorp Consul
HashiCorp Consul versions 1.19.1 through 2.0.2 contain a vulnerability where the {{session:write}} ACL permission is not enforced for session deletion via the transaction API. This allows an authenticated user with network access to the Consul server RPC port to delete arbitrary sessions without proper authorization. The issue is fixed in Consul 2.0.3 and specified Enterprise versions.
AI Analysis
Technical Summary
CVE-2026-19016 is a vulnerability in HashiCorp Consul Community Edition and Enterprise versions 1.19.1 through 2.0.2. The flaw involves improper enforcement of the {{session:write}} ACL permission during session deletion operations submitted through the transaction API. An authenticated attacker with network access to the RPC port can delete arbitrary sessions without holding the required permission. This is classified under CWE-22 (Improper Limitation of a Pathname to a Restricted Directory, Path Traversal). The vulnerability is resolved in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An authenticated user with network access to the Consul server RPC port can delete arbitrary sessions without having the necessary ACL permissions. This could lead to disruption of session management and potential denial of service or other impacts related to session handling. There is no indication of confidentiality or integrity compromise beyond session deletion.
Mitigation Recommendations
A fix is available in Consul version 2.0.3 and Consul Enterprise versions 1.21.17, 1.22.11, and 2.0.3. Users should upgrade to these versions to remediate the vulnerability. Since the vulnerability requires authenticated network access, restricting RPC port access to trusted users may reduce risk until patched.
CVE-2026-19016: CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in HashiCorp Consul
Description
HashiCorp Consul versions 1.19.1 through 2.0.2 contain a vulnerability where the {{session:write}} ACL permission is not enforced for session deletion via the transaction API. This allows an authenticated user with network access to the Consul server RPC port to delete arbitrary sessions without proper authorization. The issue is fixed in Consul 2.0.3 and specified Enterprise versions.
CVSS v3.1
Score 4.2medium
Affected software
pkg:github/Consul EnterpriseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19016 is a vulnerability in HashiCorp Consul Community Edition and Enterprise versions 1.19.1 through 2.0.2. The flaw involves improper enforcement of the {{session:write}} ACL permission during session deletion operations submitted through the transaction API. An authenticated attacker with network access to the RPC port can delete arbitrary sessions without holding the required permission. This is classified under CWE-22 (Improper Limitation of a Pathname to a Restricted Directory, Path Traversal). The vulnerability is resolved in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An authenticated user with network access to the Consul server RPC port can delete arbitrary sessions without having the necessary ACL permissions. This could lead to disruption of session management and potential denial of service or other impacts related to session handling. There is no indication of confidentiality or integrity compromise beyond session deletion.
Mitigation Recommendations
A fix is available in Consul version 2.0.3 and Consul Enterprise versions 1.21.17, 1.22.11, and 2.0.3. Users should upgrade to these versions to remediate the vulnerability. Since the vulnerability requires authenticated network access, restricting RPC port access to trusted users may reduce risk until patched.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-08-05T20:21:36.890Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a763509bf8831d5390b0150
Added to database: 08/07/2026, 19:42:01 UTC
Last enriched: 08/07/2026, 20:00:42 UTC
Last updated: 08/07/2026, 20:00:42 UTC
Views: 2
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