Consul txAPI Session Delete ACL Flaw v1.19.12.0.2
CVE-2026-19016 Published on August 7, 2026
Authorization bypass for session deletion in the transaction API
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.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-19016 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-19016
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Affected Versions
HashiCorp Consul:- Version 1.19.1 and below 2.0.3 is affected.
- Version 1.19.1 and below 2.0.3 is affected.