Threats / Apache / CVE-2026-34197
CVE-2026-34197
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Apache ActiveMQ vulnerability
Apache ActiveMQ contains an improper input validation vulnerability allowing code injection. The flaw has been exploited in the wild.
Verdict
Today item — known-exploited.
Improper input validation in Apache ActiveMQ permits code injection attacks. Active exploitation in the wild combined with high EPSS score indicates immediate risk to deployed instances.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
64 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-04-16).
Probability (EPSS)
EPSS 0.87048 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Apache, ActiveMQ. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-20 Improper Input Validation, CWE-94 Code Injection — weakness family: Injection.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft malicious input that bypasses validation checks in ActiveMQ message processing.
Business
Attackers gain ability to inject arbitrary code into the messaging system.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I inject code that executes within the ActiveMQ process context with broker privileges.
Business
Injected code runs with full broker permissions, enabling system compromise.
3
Lateral reach — past segmentation narrative 3
Attacker
I establish command execution and lateral movement from the compromised broker.
Business
Infrastructure integrity is breached; attackers pivot to connected systems and data stores.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Disclosure & credit2
Catalogued by apacheCNA
Credited with finding itNaveen Sunkavally (Horizon3.ai)finder