Fluent Bit is a fast and lightweight logs, metrics, and traces processor for Linux, BSD, macOS, and Windows. From 0.11.0 until 5.0.8, plugins/out_forward/forward.c secure_forward_pong copies the server-controlled PONG[2] reason into the 32-byte stack buffer msg with memcpy withou...
Vendor
fluent vulnerabilities
7 published CVES affecting fluent, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 7
- Critical
- 3
- High
- 3
- Medium
- 0
- Low
- 1
- Unscored
- 0
- CISA KEV
- 0
Products
Latest fluent CVEs
Newest publication first
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CriticalCVSS 9.2
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CVE-2026-44162 fluent-plugin-s3: Denial of Service (DoS) via Decompression Bomb in `in_s3`
PublishedLowCVSS 2.7fluent-plugin-s3 is an Amazon S3 input and output plugin for Fluentd. From 0.7.0 to 1.8.4, the in_s3 input plugin reads the entire decompressed payload of gzip, lzma2, and lzop objects into memory without enforcing a decompression_size_limit. An attacker with permission to upload...
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CVE-2026-44161 Fluentd: Server-Side Request Forgery (SSRF) via Placeholder Expansion in `out_http`
PublishedHighCVSS 7.2Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, the Fluentd out_http output plugin allows placeholders such as ${tag} in the endpoint configuration parameter, and if a placeholder value is de...
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HighCVSS 7.5
Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd's in_http and in_forward plugins support gzip-compressed data but enforce limits only on compressed payloads through settings such as b...
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HighCVSS 7.5
Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd's Monitor Agent plugin in_monitor_agent exposes internal metrics and plugin information via a REST API, and responses from /api/plugins...
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CVE-2026-44024 Fluentd: Remote Code Execution (RCE) via Arbitrary File Write in `${tag}` Placeholder
PublishedCriticalCVSS 9.8Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd allows dynamically constructing file paths using the ${tag} placeholder, and insufficient validation of ${tag} in file configurations s...
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CriticalCVSS 9.8 EPSS 45.0% PoC
Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. A remote code execution (RCE) vulnerability in non-default configurations of Fluentd allows unauthenticated attackers to execute arbitrary code via specially cr...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.