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CVE-2026-49363— Apache Artemis, Apache ActiveMQ Artemis: Pre-Authentication Information Disclosure in CORE Protocol Topology Subscription

Quick assessment

Affected
Apache Software Foundation Apache Artemis
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

未经身份验证的远程攻击者通过连接 CORE 协议，可在进行身份验证之前发送 SUBSCRIBE_TOPOLOGY 请求，从而发现集群节点详情。 此问题影响 Apache Artemis 版本 2.50.0 至 2.56.0；以及 Apache ActiveMQ Artemis 版本 1.0.0 至 2.44.0。 建议用户升级至 2.57.0 版本，该版本已修复此问题。

AI Predicted 5.3 Difficulty: Easy
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I. Basic Information for CVE-2026-49363

Vulnerability Information
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Vulnerability Title
Apache Artemis, Apache ActiveMQ Artemis: Pre-Authentication Information Disclosure in CORE Protocol Topology Subscription
Source: CVE Program / CVE List V5
Vulnerability Description
An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication. This issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0. Users are recommended to upgrade to version 2.57.0, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Artemis 2.50.0 ~ 2.56.0 -
Apache Software Foundation Apache ActiveMQ Artemis 1.0.0 ~ 2.44.0 -

II. Public POCs for CVE-2026-49363

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III. Intelligence Information for CVE-2026-49363

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Mailing List Discussions for CVE-2026-49363 (1)

Same Patch Batch · Apache Software Foundation · 2026-09-10 · 11 CVEs total

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CVE-2026-49362 Apache Artemis, Apache ActiveMQ Artemis: Missing Authentication in CORE Protocol Handler A
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IV. Related Vulnerabilities

Same product: Apache Artemis
Same vendor: Apache Software Foundation
Same weakness: CWE-306

V. Comments for CVE-2026-49363

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