Bug 2560986 (CVE-2026-105765)

Summary: CVE-2026-105765 github.com/hashicorp/consul: Consul: Information disclosure via authorization bypass in leaf certificate API
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: lchilton, rhel-process-autobot, sfeifer, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in HashiCorp Consul. An authorization bypass vulnerability in the agent's service mesh leaf certificate API allows an attacker without a valid Access Control List (ACL) token to retrieve cached service leaf certificates along with their private keys. This could enable an unauthorized attacker to obtain sensitive cryptographic credentials and potentially impersonate trusted services within the network.
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Description OSIDB Bzimport 2026-10-26 17:54:03 UTC
HashiCorp Consul and Consul Enterprise 1.17.0 up to 2.0.4 are vulnerable to an authorization bypass in the agent's service mesh leaf certificate API that may allow an attacker without a valid ACL token to retrieve a cached service leaf certificate and its private key. This vulnerability (CVE-2026-105765) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.