CVE-2026-74761: Apache ActiveMQ Broker · Improper Input Validation
Affects Apache ActiveMQ BrokerSource CVE Database V5
Not known to be exploited · CVSS 7.5 High : upgrade to 6.3.2 or 5.19.11 soon.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers can reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-09-10.
- Patch
- Available – fixed in 6.3.2, 5.19.11
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 9 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade Apache to 6.3.2 or 5.19.11.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apache Software FoundationApache ActiveMQ Broker | Affected
| Fixed in
|
| Apache Software FoundationApache ActiveMQ Broker | Affected
| Fixed in
|
| Apache Software FoundationApache ActiveMQ All | Affected
| Fixed in
|
| Apache Software FoundationApache ActiveMQ All | Affected
| Fixed in
|
| Apache Software FoundationApache ActiveMQ | Affected
| Fixed in
|
| Apache Software FoundationApache ActiveMQ | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should upgrade Apache ActiveMQ Broker to version 5.19.11 or 6.3.2 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated.
Description
CVE-2026-74761 is an improper input validation vulnerability in the TopicRegion component of Apache ActiveMQ Broker. An authenticated client can spoof the clientId when removing a durable topic subscription, potentially impacting the integrity of subscription management. This affects Apache ActiveMQ Broker versions before 5.19.11 and versions from 6.0.0 before 6.3.2. Upgrading to versions 5.19.11 or 6.3.2 resolves the issue.