Bug 2494845 (CVE-2026-50750)

Summary: CVE-2026-50750 activemq: Apache ActiveMQ: Denial of Service via repeated BrokerInfo commands
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: anthomas, anujha, aschwart, asoldano, aszczucz, ataylor, bbaranow, bmaxwell, boliveir, bstansbe, dbruscin, dlofthou, drichtar, ehelms, ehugonne, fmariani, ggainey, gmalinko, gtanzill, istudens, ivassile, iweiss, janstey, jbuscemi, jpasqual, juwatts, jwon, kvanderr, mcarlett, mhulan, mosmerov, mposolda, msvehla, nmoumoul, nwallace, osousa, pcreech, pdelbell, pesilva, pjindal, pmackay, rchan, rhel-process-autobot, rmartinc, rstancel, rstepani, smallamp, ssilvert, sthorger, tcunning, thjenkin, tmalecek, vdosoudi, vmuzikar, watson-tool-maintainers, yfang
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Apache ActiveMQ. An unauthenticated remote attacker can exploit this vulnerability by repeatedly sending BrokerInfo commands without corresponding ConnectionInfo commands. This can lead to an Out of Memory condition, causing the broker to crash and resulting in a Denial of Service.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-06-30 11:02:30 UTC
Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.

Following the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.
This issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.

Users are recommended to upgrade to version 6.2.7, which fixes the issue.