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Vulnerability record · CVE-2026-58080 · published 4 August 2026

CVE-2026-58080: Eclipse milo missing authorization vulnerability

Eclipse · Milo

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.

8.8 CVSS 4.0 High EPSS 0.38% · top 70.9% CWE-862 · Missing authorization
8.8CVSS 4.0 base score
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
5 Aug 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/eclipse-milo/milo/commit/d51f03e9a75f313ab41c3d68d809f4b922073f1a Patch
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/180 Issue TrackingPatchVendor Advisory
https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598 Issue TrackingVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2026-60007Eclipse milo vulnerabilityIn Eclipse Milo versions 0.6.0 through 1.1.4, username-token processing returns distinguishable errors for invalid RSA PKCS#1 v1.5 padding and other …EPSS 0.55%8.7CVE-2026-62927Eclipse milo incorrect authorization vulnerabilityIn Eclipse Milo versions 1.0.0 through 1.1.4, the Call service dispatches the original mixed batch to address-space handlers after calculating author…EPSS 0.42%8.7CVE-2026-63252Eclipse milo memory leak vulnerabilityIn Eclipse Milo versions 0.6.0 through 1.1.4, UASC server transport handlers fail to release retained partial message chunks when a channel disconnec…EPSS 0.58%7.5CVE-2022-25897Eclipse milo allocation without limits vulnerabilityThe package org.eclipse.milo:sdk-server before 0.6.8 are vulnerable to Denial of Service (DoS) when bypassing the limitations for excessive memory co…EPSS 1.3%6.9CVE-2026-61387Eclipse milo uncontrolled resource consumption vulnerabilityIn Eclipse Milo versions 1.0.0 through 1.1.4, monitored-item quota accounting is not exception-safe: if item creation fails with an unchecked error, …EPSS 0.62%6.9CVE-2026-63248Eclipse milo missing authorization vulnerabilityIn Eclipse Milo versions 0.6.0 through 1.1.4, OPC UA server diagnostics nodes do not enforce access authorization. An anonymous client can enable dia…EPSS 0.26%9.9CVE-2026-84869ScreenConnect client allows unauthorized file transfer and execution in remote sessionsA flaw in the ConnectWise ScreenConnect client lets files be transferred and executed inside an active remote session without authorization or Host c…KEVEPSS 0.92%analysed7.8CVE-2022-0492Linux kernel cgroups v1 release_agent privilege escalation and container escapeThe Linux kernel's cgroup_release_agent_write in kernel/cgroup/cgroup-v1.c mishandles authorization, letting the cgroups v1 release_agent feature be …KEVEPSS 5.5%analysed

Source: NIST National Vulnerability Database (record CVE-2026-58080), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.