SEPTEMBER 20, 2026
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Case File

CVE-2026-59878

HIGH · CVSS 7.5 EPSS 0.49%

Source: NVD + CISA KEV + EPSS · Published 2026-07-28 · Last synced 2026-08-27

CyberRota Analysis

AI-Generated

Apache ActiveMQ and its AMQP connector are vulnerable to a denial-of-service attack due to improper input validation, allowing remote unauthenticated peers to exhaust the NIO thread pool by sending oversized frame size values. This can disrupt service for legitimate connections, making it critical for organizations using affected versions (prior to 5.19.9 and 6.2.8) to prioritize upgrading to the latest versions to mitigate this risk. Immediate action is recommended for all users of Apache ActiveMQ to ensure service availability and security.

CVE
CVE-2026-59878
Severity
HIGH
CVSS
7.5
EPSS
0.49%
Apache

Original NVD Description

Improper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All. A remote unauthenticated peer that can reach an exposed AMQP NIO connector can trigger denial-of-service behavior by sending a frame size value. This cause the NIO threads to die and if done rapidly enough can lead to exhaustion of the NIO thread pool denying service to other connections. This issue affects Apache ActiveMQ AMQP: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ All: before 5.19.9, from 6.0.0 before 6.2.8. Users are recommended to upgrade to version 5.19.9, 6.2.8, or 6.3.0 which fixes the issue.

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