CVE-2026-19016: CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in HashiCorp Consul
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.
AI Analysis
Technical Summary
CVE-2026-19016 is a medium severity 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, potentially impacting availability. The vulnerability is addressed in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An attacker with network access and authentication to the Consul server RPC port can delete arbitrary sessions without proper ACL permissions. This could lead to denial of service or disruption of session-based operations. There is no confidentiality or integrity impact reported.
Mitigation Recommendations
Upgrade affected Consul versions to 2.0.3 or later for Community Edition, or to Enterprise versions 1.21.17, 1.22.11, or 2.0.3 as applicable. No other mitigations are indicated. Patch status is confirmed fixed in these versions.
CVE-2026-19016: CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in HashiCorp Consul
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.
CVSS v3.1
Score 4.2medium
Affected software
HashiCorp
Consul
HashiCorp
Consul Enterprise
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 medium severity 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, potentially impacting availability. The vulnerability is addressed in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An attacker with network access and authentication to the Consul server RPC port can delete arbitrary sessions without proper ACL permissions. This could lead to denial of service or disruption of session-based operations. There is no confidentiality or integrity impact reported.
Mitigation Recommendations
Upgrade affected Consul versions to 2.0.3 or later for Community Edition, or to Enterprise versions 1.21.17, 1.22.11, or 2.0.3 as applicable. No other mitigations are indicated. Patch status is confirmed fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-08-05T20:21:36.890Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a763509bf8831d5390b0150
Added to database: 08/07/2026, 19:42:01 UTC
Last enriched: 08/15/2026, 15:14:17 UTC
Last updated: 09/21/2026, 22:01:32 UTC
Views: 42
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