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CVE-2026-58080

8.2 · HIGH

In Eclipse Milo versions 1.0.0 through 1.1.4, `OpcUaServerConfig.copy()` fails to preserve a configured `RoleMapper`.

Published Aug 4, 2026eclipseCWE-862EPSS 0.38%

Overview

CVE-2026-58080 is a high-severity vulnerability affecting eclipse milo. It was published on August 4, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from eclipse. Update milo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
eclipsemilo>= 1.0.0, < 1.1.5Affected

References

GitHubgithub.com/eclipse-milo/milo/commit/d51f03e9a75f313ab41c3d68d809f4b922073f1aRefgitlab.eclipse.org/security/cve-assignment/-/work_items/180Refgitlab.eclipse.org/security/vulnerability-reports/-/work_items/598

How CyberStrike helps

Frequently asked questions

What is CVE-2026-58080?

CVE-2026-58080 is a high-severity vulnerability affecting eclipse milo. It was published on August 4, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-58080?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-58080?

Check the references section for vendor advisories and patches from eclipse. Update milo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-58080?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-58080 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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