Security readout for executives and security teams
Plain-English summary
CVE-2026-34197 lets a logged-in attacker turn Apache ActiveMQ Classic’s web management interface into code execution on the broker server. Because CISA lists it in KEV, organizations should treat affected internet-reachable or broadly accessible brokers as urgent.
Executive priority
Treat this as a near-term remediation priority. It combines authenticated remote code execution, low attack complexity, full system impact, and CISA KEV evidence of exploitation.
Technical view
ActiveMQ Classic exposes Jolokia at /api/jolokia/. The default policy permits exec operations on ActiveMQ MBeans. An authenticated attacker can abuse connector MBean operations with crafted input that causes Spring ResourceXmlApplicationContext bean instantiation before validation, resulting in JVM-level remote code execution.
Likely exposure
Exposure is most likely where Apache ActiveMQ Classic web console or Jolokia access is enabled and reachable by non-administrative or compromised authenticated users. Affected versions are before 5.19.4 and 6.0.0 through before 6.2.3.
Exploitation context
The source bundle states CISA KEV status, so active exploitation is supported. The vulnerability requires network access, low privileges, and no user interaction, with high confidentiality, integrity, and availability impact.
Researcher notes
Evidence supports the Jolokia-to-MBean execution path and affected version ranges. The bundle does not provide safe detection signatures, exploit prevalence, or product-specific downstream vendor status beyond listed references.
Mitigation direction
- Upgrade Apache ActiveMQ Classic to 5.19.4 or 6.2.3.
- Prioritize brokers with reachable web console or Jolokia endpoints.
- Limit ActiveMQ administrative access to trusted management networks and accounts.
- Review Apache guidance before relying on compensating controls.
- Monitor vendor and CISA updates for revised remediation guidance.
Validation and detection
- Inventory ActiveMQ Broker, ActiveMQ All, and Apache ActiveMQ package versions.
- Confirm all affected deployments run 5.19.4, 6.2.3, or later.
- Check whether /api/jolokia/ is enabled and reachable.
- Review authentication logs for unexpected web console or Jolokia access.
- Review broker logs for unusual connector or network-connector changes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-34197 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9redhat-SADPVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- ADP timelineredhat-SADP
Made public.
- CVE publishedCVE Program
The CVE record was published.
- ADP timelineredhat-SADP
Reported to Red Hat.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2026-04-07T09:01:09.089Z: Reported to Red Hat.
- 2026-04-07T07:50:10.958Z: Made public.
Source materials
- CVE List V5 sourceCVE List V5
- https://activemq.apache.org/security-advisories.data/CVE-2026-34197-announcement.txtCVE reference, apache · vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34197CVE reference, CISA-ADP · government-resource
- https://access.redhat.com/security/cve/CVE-2026-34197CVE reference, redhat-SADP · vdb-entry, x_refsource_REDHAT
- RHBZ#2455869CVE reference, redhat-SADP · issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34197.jsonCVE reference, redhat-SADP · x_sadp-csaf-vex
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.