What’s Vulnerable › Vulnerabilities

CVE-2026-63248

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-04 · updated 2026-10-23
• Weakness: CWE-862

Description

In 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 diagnostics over a None/None endpoint without a certificate; with a trusted client application certificate over SignAndEncrypt, it can read security diagnostics for other active sessions, exposing usernames, login history, authentication mechanisms, security modes and policies, and public client certificates.

Affected products

• Eclipse Foundation Eclipse Milo: from 0.6.0 before 1.1.5 — fixed in 1.1.5

How to fix

Upgrade to a fixed version: Eclipse Foundation Eclipse Milo 1.1.5. Check the vendor advisory for mitigations.

References

• https://github.com/eclipse-milo/milo/commit/a5dae1be0657d2b4fcb66e63f377c1dc36069e2a
• https://gitlab.eclipse.org/security/cve-assignment/-/work_items/181
• https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598

Get alerted when CVE-2026-63248 or the next vulnerability affects your stack