CVE-2026-15970: CWE-647: Non-Canonical URL Authorization in HashiCorp Consul
HashiCorp Consul versions 1.20.1 through 2.0.2 contain a vulnerability (CVE-2026-15970) that allows an authenticated mesh workload to bypass path-based deny intentions when a service proxy is configured with a custom public listener. This issue is fixed in Consul 2.0.3 and specific Enterprise versions.
AI Analysis
Technical Summary
CVE-2026-15970 is a non-canonical URL authorization bypass vulnerability in HashiCorp Consul Community Edition and Enterprise versions 1.20.1 through 2.0.2. The flaw occurs when a service proxy uses a custom public listener, enabling an authenticated mesh workload to access HTTP paths that should be blocked by path-based deny intentions. This represents an L7 intention authorization bypass. 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 authenticated mesh workload can circumvent path-based deny intentions, potentially accessing HTTP paths that should be restricted. The impact is limited to confidentiality and integrity at a low level, with no availability impact. The CVSS score is 4.2 (medium severity), indicating a moderate risk under conditions requiring network access with low privileges and high attack complexity.
Mitigation Recommendations
A fix is available in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3. Users should upgrade to these versions to remediate the vulnerability. No other vendor advisories or temporary mitigations are provided.
CVE-2026-15970: CWE-647: Non-Canonical URL Authorization in HashiCorp Consul
Description
HashiCorp Consul versions 1.20.1 through 2.0.2 contain a vulnerability (CVE-2026-15970) that allows an authenticated mesh workload to bypass path-based deny intentions when a service proxy is configured with a custom public listener. This issue is fixed in Consul 2.0.3 and specific 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-2026-15970 is a non-canonical URL authorization bypass vulnerability in HashiCorp Consul Community Edition and Enterprise versions 1.20.1 through 2.0.2. The flaw occurs when a service proxy uses a custom public listener, enabling an authenticated mesh workload to access HTTP paths that should be blocked by path-based deny intentions. This represents an L7 intention authorization bypass. 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 authenticated mesh workload can circumvent path-based deny intentions, potentially accessing HTTP paths that should be restricted. The impact is limited to confidentiality and integrity at a low level, with no availability impact. The CVSS score is 4.2 (medium severity), indicating a moderate risk under conditions requiring network access with low privileges and high attack complexity.
Mitigation Recommendations
A fix is available in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3. Users should upgrade to these versions to remediate the vulnerability. No other vendor advisories or temporary mitigations are provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-07-16T15:31:32.340Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a763509bf8831d5390b0141
Added to database: 08/07/2026, 19:42:01 UTC
Last enriched: 08/07/2026, 20:01:20 UTC
Last updated: 08/07/2026, 20:46:44 UTC
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.