Critical severity · published Jul 24, 2026
CVE-2026-15704
CWE-863: ABAC authorization bypass via trailing slash route normalization in Eclipse BaSyx Go Components
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EB
Eclipse BaSyx Go Components · Eclipse Foundation
before 1.0.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15704
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15704
github.com
https://github.com/eclipse-basyx/basyx-go-components/pull/442
github.com
https://github.com/eclipse-basyx/basyx-go-components/releases/tag/v1.0.1
gitlab.eclipse.org
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/164
gitlab.eclipse.org
https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/580
