What is CVE-2026-74761?

CVE-2026-74761 is a high-severity vulnerability in Apache Activemq, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-09-09.

How severe is CVE-2026-74761?

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

Improper input validation in Apache Activemq

CVE-2026-74761

Improper input validation in TopicRegion in Apache ActiveMQ, Apache ActiveMQ Broker, and Apache ActiveMQ All on all platforms. An authenticated client can spoof clientId when removing a durable topic subscription. This issue affects Apache ActiveMQ Broker: before 5.19.11, from 6.0.0 before 6.3.2; Apache ActiveMQ All: before 5.19.11, from 6.0.0 before 6.3.2; Apache ActiveMQ: before 5.19.11, from 6.0.0 before 6.3.2. Users are recommended to upgrade to version 6.3.2 or 5.19.11 which fixes the issue.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2026-09-09 · last modified 2026-09-18.

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.

EPSS exploit prediction

EPSS: 0.006 (49.2th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

lists.apache.org/thread/n9md06jo7ccqmj2mntx4kpcl2d5xqntz (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)

Frequently asked questions

What is CVE-2026-74761?: CVE-2026-74761 is a high-severity vulnerability in Apache Activemq, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-09-09.
How severe is CVE-2026-74761?: High severity. CVSS v3 base score is 7.5 out of 10.