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CVE-2026-108946

Apache ActiveMQ, ActiveMQ Broker: The broker does not verify user provided connection id matches connection

CVSS score

—

EPSS probability

—

Risk score

—

Published

4 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Apache ActiveMQ Connection ID Verification Vulnerability

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

An improper input validation vulnerability exists in Apache ActiveMQ and Apache ActiveMQ KahaDB where the broker does not verify that user-provided connection IDs match the connection.

Why does it matter?

It allows an authenticated attacker to spoof another user's IDs, consume messages from temporary queues, terminate live subscriptions, or permanently delete in-flight messages.

What should be done?

  • Upgrade to version 6.4.0, 6.3.3, or 5.19.12.
  • Follow vendor advisories.
Chain of evidence and sources2 verified claims

Apache ActiveMQ ve Apache ActiveMQ KahaDB, uygunsuz girdi doğrulama zafiyetinden etkilenmektedir.

S0 · daybreach-canonicalS1 · cvelist

Kimliği doğrulanmış bir istemci, kurbanın bağlantı kimliğini kullanarak başka bir bağlantının geçici kuyruğundan veri tüketebilir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

Improper input validation vulnerability in Apache ActiveMQ, Apache ActiveMQ KahaDB. The ActiveMQ broker resolves connection, session and consumer state from ids that are user provided and in some scenarios does not validate that they ids are bound to that user. This allows an authenticated client to spoof another user's ids. This allows: *  an authenticated client consumes from another connection's temporary queue/topic by putting the victim's connection id in its own ConsumerId, bypassing the broker-side ownership check.  * a duplicate ConsumerId registration is only logged, after which the attacker's RemoveInfo or disconnect tears down the victim's live subscription * a forged MessageAck for the victim's ConsumerId permanently deletes an in-flight, unacknowledged message. This issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; Apache ActiveMQ KahaDB: from 6.0.0 before 6.3.3, before 5.19.12. Users are recommended to upgrade to version 6.4.0, 6.3.3, or 5.19.12, which fixes the issue.

CWE: CWE-20

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-108946 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Apache Software FoundationApache ActiveMQ View
2Apache Software FoundationActiveMQ Broker View
Total affected vendors: 1|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
The sources have not yet published a verified CVSS metric.

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-108946 is associated with the following CWEs:

CWE-20: Improper Input Validation

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-108946 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Official Sources and Advisories

https://lists.apache.org/thread/0spj0m846vhw3cjyfmzsy3l8vxh6f5t6vendor-advisoryhttp://www.openwall.com/lists/oss-security/2026/11/03/17nvd

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Apache Software Foundation

Weakness Type (CWE & CAPEC)

CWE-20

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CVE-2026-108946 · Apache ActiveMQ, ActiveMQ Broker: The…