CVE-2026-15970: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-h928-jqxm-5f3x
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CVSS 4.2
CWE-647
Published
Advisory Summary

CVE-2026-15970 is a MODERATE (CVSS 4.2) security vulnerability vulnerability (CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product defines policy namespaces and makes authorization decisions based on the assumption that a url is canonical. this can allow a non-canonical url to bypass the authorization.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-15970 at a Glance

CVE Identifier CVE-2026-15970
GHSA Identifier GHSA-h928-jqxm-5f3x
Severity MODERATE
CVSS v3.1 Base Score 4.2
CWE Classification CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-15970

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-15970, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions, where the product defines policy namespaces and makes authorization decisions based on the assumption that a url is canonical. this can allow a non-canonical url to bypass the authorization. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Consul Community Edition and Consul Enterprise 1.20.1 through 2.0.2 are vulnerable to an L7 intention authorization bypass when a service proxy is configured with a custom public listener. An authenticated mesh workload may reach HTTP paths that are blocked by a path-based deny intention. This vulnerability, CVE-2026-15970, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.

References

NVD — CVE-2026-15970 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15970
discuss.hashicorp.com/t/hcsec-2026-25-mul... WEB
https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629

Frequently Asked Questions

What is CVE-2026-15970?
CVE-2026-15970 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-15970?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-15970?
CVE-2026-15970 has a CVSS v3.1 base score of 4.2 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2026-15970?
CVE-2026-15970 is classified under CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions (The product defines policy namespaces and makes authorization decisions based on the assumption that a URL is canonical. This can allow a non-canonical URL to bypass the authorization.).
How can I check Maven dependencies for CVE-2026-15970?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-h928-jqxm-5f3x",
  "modified" : "2026-08-07T21:30:37Z",
  "published" : "2026-08-07T21:30:37Z",
  "aliases" : [ "CVE-2026-15970" ],
  "details" : "Consul Community Edition and Consul Enterprise 1.20.1 through 2.0.2 are vulnerable to an L7 intention authorization bypass when a service proxy is configured with a custom public listener. An authenticated mesh workload may reach HTTP paths that are blocked by a path-based deny intention. This vulnerability, CVE-2026-15970, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-15970"
  }, {
    "type" : "WEB",
    "url" : "https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-647" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-07T20:16:49Z"
  }
}