[UPDATE] [high] Apache ActiveMQ, Client, Broker and Web: Multiple vulnerabilities

highpublic exploitCVE-2026-33227 CVE-2026-34197

A remote, authenticated attacker can exploit multiple vulnerabilities in Apache ActiveMQ to manipulate files or execute arbitrary code.

CSIRTS triage

vendor: Apache product: ActiveMQ Remote code executionOther

What: Multiple vulnerabilities can be exploited by a remote, authenticated attacker to manipulate files or execute arbitrary code.
Who is affected: Deployments of Apache ActiveMQ.
Urgency: Remediation is urgent due to high severity and confirmed exploitation.
Action: Update to the latest version of Apache ActiveMQ.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-07-24
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0991

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-332270.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all scored CVEs.
Exploitation likely imminentCVE-2026-34197EPSS puts this in the most-targeted tier (97.2% 30-day exploitation probability). Prioritize alongside KEV items. Riskier than 100% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-33227	coverage & exploitation status	NVD · CVE.org
CVE-2026-34197	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

criticalexploitedCVE-2026-34197: Apache ActiveMQ Improper Input Validation Vulnerabilitycisa-kev

Recent advisories for Apache ActiveMQ

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

medium[NEW] [medium] Apache ActiveMQ: Multiple vulnerabilitiescert-bund · 2026-07-29
mediumCVE-2026-61487: Improper Authorization vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache Ac…nvd · 2026-07-28
highCVE-2026-59878: Improper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache Activ…nvd · 2026-07-28
medium[UPDATE] [medium] Apache ActiveMQ: Multiple vulnerabilitiescert-bund · 2026-07-24
medium[NEW] [medium] Apache ActiveMQ: Vulnerability allows Cross-Site Scriptingcert-bund · 2026-07-14
highCVE-2026-54475: Missing Authorization vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache Act…nvd · 2026-06-30