Vulnerability Description
In Eclipse Milo versions 1.0.0 through 1.1.4, `OpcUaServerConfig.copy()` fails to preserve a configured `RoleMapper`. On servers that rely on role permissions and construct the running configuration through `copy()`, sessions receive no role IDs and the default access controller skips role-permission checks, allowing an anonymous client where anonymous sessions are permitted to read role-permission metadata, invoke protected methods, or delete protected nodes.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Eclipse | Milo | >= 1.0.0, < 1.1.5 |
Related Weaknesses (CWE)
References
- https://github.com/eclipse-milo/milo/commit/d51f03e9a75f313ab41c3d68d809f4b92207Patch
- https://gitlab.eclipse.org/security/cve-assignment/-/work_items/180Issue TrackingPatchVendor Advisory
- https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598Issue TrackingVendor Advisory
FAQ
What is CVE-2026-58080?
CVE-2026-58080 is a vulnerability with a CVSS score of 8.2 (HIGH). In Eclipse Milo versions 1.0.0 through 1.1.4, `OpcUaServerConfig.copy()` fails to preserve a configured `RoleMapper`. On servers that rely on role permissions and construct the running configuration t...
How severe is CVE-2026-58080?
CVE-2026-58080 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-58080?
Check the references section above for vendor advisories and patch information. Affected products include: Eclipse Milo.