CVE-2026-15704: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-86p5-cmgc-c94w
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CVSS 9.8
CWE-180
Published
Advisory Summary

CVE-2026-15704 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (CWE-180: Incorrect Behavior Order: Validate Before Canonicalize) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product validates input before it is canonicalized, which prevents the product from detecting data that becomes invalid after the canonicalization step.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-15704 at a Glance

CVE Identifier CVE-2026-15704
GHSA Identifier GHSA-86p5-cmgc-c94w
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-180: Incorrect Behavior Order: Validate Before Canonicalize
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

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

How to Fix CVE-2026-15704

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-2026-15704, 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-180: Incorrect Behavior Order: Validate Before Canonicalize, where the product validates input before it is canonicalized, which prevents the product from detecting data that becomes invalid after the canonicalization step. 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

In Eclipse BaSyx Go Components versions up to and including 1.0.0, ABAC-enabled deployments are vulnerable to an authorization bypass caused by inconsistent trailing-slash handling between the ABAC middleware and the HTTP router. The shared router configuration used Chi's `middleware.StripSlashes`, so a request such as `GET /shells/` was dispatched to the registered `GET /shells` route. However, the ABAC middleware evaluated the original request path including the trailing slash. If ABAC route lookup did not find a matching slash-suffixed route, the request was passed onward and the router then stripped the slash and executed the protected handler without the intended ABAC authorization decision and without the expected ABAC query filters. An unauthenticated or unauthorized network attacker could append a trailing slash to protected API routes to reach handlers that should have been denied by ABAC policy. Depending on the exposed component, HTTP method, and deployed policy, this could allow unauthorized read, create, update, delete, or upload operations. The issue affects ABAC-enabled deployments of services that use the shared router and ABAC middleware, including AAS Repository, Submodel Repository, AAS Registry, Submodel Registry, Concept Description Repository, Discovery, AAS Environment upload, and related services. The issue is fixed in Eclipse BaSyx Go Components v1.0.1.

References

NVD — CVE-2026-15704 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15704
Software Source Repository REPOSITORY
https://github.com/eclipse-basyx/basyx-go-components/pull/442
Software Release RELEASE
https://github.com/eclipse-basyx/basyx-go-components/releases/tag/v1.0.1
Software Security Information SECURITY
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/164
Software Security Information SECURITY
https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/580

Frequently Asked Questions

What is CVE-2026-15704?
CVE-2026-15704 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-180: Incorrect Behavior Order: Validate Before Canonicalize.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-15704?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-15704?
CVE-2026-15704 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-15704?
CVE-2026-15704 is classified under CWE-180: Incorrect Behavior Order: Validate Before Canonicalize (The product validates input before it is canonicalized, which prevents the product from detecting data that becomes invalid after the canonicalization step.).
How can I check Maven dependencies for CVE-2026-15704?
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 
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  "id" : "GHSA-86p5-cmgc-c94w",
  "modified" : "2026-07-24T09:32:16Z",
  "published" : "2026-07-24T09:32:16Z",
  "aliases" : [ "CVE-2026-15704" ],
  "details" : "In Eclipse BaSyx Go Components versions up to and including 1.0.0, ABAC-enabled deployments are vulnerable to an authorization bypass caused by inconsistent trailing-slash handling between the ABAC middleware and the HTTP router.\n\n\n\nThe shared router configuration used Chi's `middleware.StripSlashes`, so a request such as `GET /shells/` was dispatched to the registered `GET /shells` route. However, the ABAC middleware evaluated the original request path including the trailing slash. If ABAC route lookup did not find a matching slash-suffixed route, the request was passed onward and the router then stripped the slash and executed the protected handler without the intended ABAC authorization decision and without the expected ABAC query filters.\n\n\n\nAn unauthenticated or unauthorized network attacker could append a trailing slash to protected API routes to reach handlers that should have been denied by ABAC policy. Depending on the exposed component, HTTP method, and deployed policy, this could allow unauthorized read, create, update, delete, or upload operations.\n\n\n\nThe issue affects ABAC-enabled deployments of services that use the shared router and ABAC middleware, including AAS Repository, Submodel Repository, AAS Registry, Submodel Registry, Concept Description Repository, Discovery, AAS Environment upload, and related services. The issue is fixed in Eclipse BaSyx Go Components v1.0.1.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
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  }, {
    "type" : "WEB",
    "url" : "https://github.com/eclipse-basyx/basyx-go-components/pull/442"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eclipse-basyx/basyx-go-components/releases/tag/v1.0.1"
  }, {
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    "type" : "WEB",
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  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-180" ],
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    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-24T09:16:24Z"
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}