What is CVE-2026-49877?

CVE-2026-49877 is a high-severity vulnerability in Apache Activemq, classified under Improper Authorization. CVSS score: 8.1/10. Published 2026-06-30.

How severe is CVE-2026-49877?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Apache Activemq

CVE-2026-49877

Improper Authorization vulnerability in Apache ActiveMQ. An authenticated low-privilege Web Console user by default can access /admin/* paths in the Web Console. The default Jetty settings incorrectly did not limit those paths to only admins. This issue affects Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7. Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.

Published 2026-06-30 · last modified 2026-07-02.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (41.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Apache Activemq
Apache Software Foundation Activemq — versions 0, 6.0.0

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

lists.apache.org/thread/w82vtc3q02j5ot94tnyy1197y3wb98hl (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)

Frequently asked questions

What is CVE-2026-49877?: CVE-2026-49877 is a high-severity vulnerability in Apache Activemq, classified under Improper Authorization. CVSS score: 8.1/10. Published 2026-06-30.
How severe is CVE-2026-49877?: High severity. CVSS v3 base score is 8.1 out of 10.