Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 18.9%
CVSS Severity
CVSS v3 Score 8.2
References
Products affected by CVE-2026-58080
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cpe:2.3:a:eclipse:milo:1.0.0
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cpe:2.3:a:eclipse:milo:1.0.1
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cpe:2.3:a:eclipse:milo:1.0.2
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cpe:2.3:a:eclipse:milo:1.0.3
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cpe:2.3:a:eclipse:milo:1.0.4
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cpe:2.3:a:eclipse:milo:1.0.5
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cpe:2.3:a:eclipse:milo:1.0.6
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cpe:2.3:a:eclipse:milo:1.0.7
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cpe:2.3:a:eclipse:milo:1.0.8
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cpe:2.3:a:eclipse:milo:1.1.0
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cpe:2.3:a:eclipse:milo:1.1.1
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cpe:2.3:a:eclipse:milo:1.1.2
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cpe:2.3:a:eclipse:milo:1.1.3
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cpe:2.3:a:eclipse:milo:1.1.4