What is CVE-2026-62927?

CVE-2026-62927 is a high-severity vulnerability in Eclipse Milo, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2026-08-04.

How severe is CVE-2026-62927?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Eclipse Milo

CVE-2026-62927

In Eclipse Milo versions 1.0.0 through 1.1.4, the Call service dispatches the original mixed batch to address-space handlers after calculating authorization, allowing an anonymous or otherwise low-privileged client to execute a denied method by batching it with an allowed method.

Vulnerability class: Broken Access Control

EPSS: 0.003 (23.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Eclipse Milo
Eclipse Foundation Milo — versions 1.0.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

emo@eclipse.org (Patch)
emo@eclipse.org (Issue Tracking, Vendor Advisory)
emo@eclipse.org (Patch, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-62927?: CVE-2026-62927 is a high-severity vulnerability in Eclipse Milo, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2026-08-04.
How severe is CVE-2026-62927?: High severity. CVSS v3 base score is 7.5 out of 10.