CVE-2026-58080

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 4.0

8.8CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-25)

CWE

CWE-862

Published

2026-08-04

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• eclipse:milo

References

• https://github.com/eclipse-milo/milo/commit/d51f03e9a75f313ab41c3d68d809f4b922073f1a
• https://gitlab.eclipse.org/security/cve-assignment/-/work_items/180
• https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598

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