Vulnerability in activemq (CVE-2026-49270)
Summary
Vulnerability in activemq (CVE-2026-49270). Confidential information can be exposed externally. Mitigation: upgrade to 5.19.7, 6.2.6 or later.
Original description
The description as published by the source.
Exposure of Sensitive Information Through Metadata vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.
Brokers that are configured with a network connector with syncDurableSubs set to true, are vulnerable to an unauthenticated attacker who can receive a list of all durable topic subscriptions in the broker, including client identifiers, subscription names, topic destinations, and JMS selector expressions, by sending a BrokerInfo command. The broker incorrectly responds without first ensuring the connection is authenticated.
This issue affects Apache ActiveMQ Broker: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ All: before 5.19.7, from 6.0.0 before 6.2.6.
Users are recommended to upgrade to version 6.2.6 or 5.19.7, which fixes the issue.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-49270 has been found in activemq.
Confidential information can be exposed externally. CVSS score: 5.9/10.
What to do: upgrade activemq to 5.19.7, 6.2.6 or later.
If unsure, ask your IT team or search "activemq CVE-2026-49270" on the vendor's site.
CVE-2026-49270 (activemq) — CWE-1230 / CVSS v3 5.9
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 5.19.7, 6.2.6 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-1230) exists in activemq.
Check the vendor advisory for the affected versions of activemq.
Severity: Medium (CVSS 5.9/10). Confidential information can be exposed externally.
Update to 5.19.7, 6.2.6.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'activemq' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'activemq' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
activemqを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade activemq to 5.19.7, 6.2.6ステージング環境で 5.19.7, 6.2.6 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-49270 activemq
- Ubuntu UBUNTU-CVE-2026-49270 activemq
References
- advisory lists.apache.org
- advisory openwall.com
- web nvd.nist.gov
- web github.com