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Vulnerability record · CVE-2026-60007 · published 4 August 2026

CVE-2026-60007: Eclipse milo vulnerability

Eclipse · Milo

In 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 authentication failures, allowing an on-path attacker who captures a victim's `Basic128Rsa15`-encrypted username token to use repeated unauthenticated `ActivateSession` requests as a padding oracle, recover the victim's password, and authenticate with the recovered credentials.

9.1 CVSS 4.0 Critical EPSS 0.55% · top 56.1% CWE-204 · CWE-204
9.1CVSS 4.0 base score
0.55%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 0.6.0 through 1.1.4, username-token processing returns distinguishable errors for invalid RSA PKCS#1 v1.5 padding and other authentication failures, allowing an on-path attacker who captures a victim's `Basic128Rsa15`-encrypted username token to use repeated unauthenticated `ActivateSession` requests as a padding oracle, recover the victim's password, and authenticate with the recovered credentials.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/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/db59fae993a3a1bc66fffc8a2796d444b40285fb Patch
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/183 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.

8.8CVE-2026-58080Eclipse milo missing authorization vulnerabilityIn Eclipse Milo versions 1.0.0 through 1.1.4, `OpcUaServerConfig.copy()` fails to preserve a configured `RoleMapper`. On servers that rely on role pe…EPSS 0.38%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%

Source: NIST National Vulnerability Database (record CVE-2026-60007), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.