CVE-2026-58080
High
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.
SeverityHigh
CVSS8.2
Exploit probability—
ProductEclipse Milo
PublishedAug 4, 2026
First seenAug 4, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- eclipse milo1.1.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| eclipse milo | 1.0.0 ≤ v < 1.1.5 | 1.1.5 |
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