Multiple Fluentd Vulnerabilities Let Attackers Execution Arbitrary Code Remotely

Cybersecuritynews •Abinaya • July 1, 2026

Several high-severity flaws in the widely used Fluentd log collector could lead to remote code execution (RCE), data leaks, and denial-of-service attacks across multiple components. The most critical issue, tracked as GHSA-44hj-4m45-frj3, has now been assigned CVE-2026-44024 and allows remote code execution through improper handling of the ${tag} placeholder. This vulnerability enables attackers to perform […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical Vulnerabilities in Fluentd Enable Remote Code Execution and SSRF Fluentd v1.19.3 addresses multiple vulnerabilities, including a critical RCE flaw tracked as CVE-2026-44024. These vulnerabilities can allow unauthenticated remote attackers to execute arbitrary code, access sensitive data, and perform server-side request forgery (SSRF). The issues primarily affect instances processing untrusted input or using vulnerable placeholder features. The impact is significant, as compromised Fluentd instances can expose sensitive infrastructure information across connected systems. No public evidence of exploitation has been reported yet, but organizations are urged to prioritize updates. The Centre for Cybersecurity Belgium recommends immediate patching and enhanced monitoring to detect potential intrusions. 5 sources 74

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Multiple Fluentd Vulnerabilities Let Attackers Execution Arbitrary Code Remotely

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Attack Types (2)

CVEs (1)

CWE Weaknesses (1)

MITRE ATT&CK (1)