# CVE-2026-58080: In Eclipse Milo versions 1.0.0 through 1.1.4, `OpcUaServerConfig.copy()` fails to preserve a configured `RoleMapper`…

Source: https://junglewise.ai/threats/cve-2026-58080-in-eclipse-milo-versions-1-0-0-through-1-1-4-opcuaserverconfig  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-04  
License: CC BY 4.0 with a link back

CVE-2026-58080 · Severity: high · CVSS 8.2 · Published 2026-08-04

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.

Technologies: [Eclipse Milo](https://junglewise.ai/threats/technologies/milo). Vendors: [Eclipse](https://junglewise.ai/threats/vendors/eclipse).

## Quick answers

**Is CVE-2026-58080 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-58080 being exploited in the wild.

**How severe is CVE-2026-58080?** High severity, with a CVSS score of 8.2, published 4 August 2026.

**Which products and versions are affected?** Eclipse Milo. The advisory does not name versions.

**Is there a fix for CVE-2026-58080?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-58080?** Check whether you run Eclipse Milo. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Eclipse Milo

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