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    2 vulnerabilities by fluent-plugins-nursery

    CVE-2026-44163 (GCVE-0-2026-44163)

    Vulnerability from nvd – Published: 2026-09-15 15:39 – Updated: 2026-09-16 16:02
    VLAI
    Title
    fluent-plugin-opentelemetry: Denial of Service (DoS) via Large Payloads and Decompression Bombs in `in_opentelemetry`
    Summary
    fluent-plugin-opentelemetry is a Fluentd input and output plugin for forwarding OpenTelemetry Protocol data. Prior to 0.5.3, the in_opentelemetry HTTP input read the entire incoming request body and decompressed payloads into memory without enforcing maximum size thresholds. When an OpenTelemetry ingestion endpoint was exposed to an untrusted network, an attacker could send an excessively large request or a highly compressed payload that expanded in memory. The resulting memory exhaustion could cause the operating system to terminate the Fluentd process, disrupting all log collection and forwarding on the affected node. This issue is fixed in version 0.5.3.
    Severity
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-16 16:01 UTC
    CWE
    • CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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                "id": "CVE-2026-44163",
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                "timestamp": "2026-09-16T16:01:56.034552Z",
                "version": "2.0.3"
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        ],
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          "dateUpdated": "2026-09-16T16:02:06.130Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "fluent-plugin-opentelemetry",
          "vendor": "fluent-plugins-nursery",
          "versions": [
            {
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              "version": "\u003c 0.5.3"
            }
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "fluent-plugin-opentelemetry is a Fluentd input and output plugin for forwarding OpenTelemetry Protocol data. Prior to 0.5.3, the in_opentelemetry HTTP input read the entire incoming request body and decompressed payloads into memory without enforcing maximum size thresholds. When an OpenTelemetry ingestion endpoint was exposed to an untrusted network, an attacker could send an excessively large request or a highly compressed payload that expanded in memory. The resulting memory exhaustion could cause the operating system to terminate the Fluentd process, disrupting all log collection and forwarding on the affected node. This issue is fixed in version 0.5.3."
        }
      ],
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      "title": "fluent-plugin-opentelemetry: Denial of Service (DoS) via Large Payloads and Decompression Bombs in `in_opentelemetry`"
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    "dateReserved": "2026-05-05T14:39:34.922Z",
    "dateUpdated": "2026-09-16T16:02:06.130Z",
    "state": "PUBLISHED"
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    CVE-2026-44163 (GCVE-0-2026-44163)

    Vulnerability from cvelistv5 – Published: 2026-09-15 15:39 – Updated: 2026-09-16 16:02
    VLAI
    Title
    fluent-plugin-opentelemetry: Denial of Service (DoS) via Large Payloads and Decompression Bombs in `in_opentelemetry`
    Summary
    fluent-plugin-opentelemetry is a Fluentd input and output plugin for forwarding OpenTelemetry Protocol data. Prior to 0.5.3, the in_opentelemetry HTTP input read the entire incoming request body and decompressed payloads into memory without enforcing maximum size thresholds. When an OpenTelemetry ingestion endpoint was exposed to an untrusted network, an attacker could send an excessively large request or a highly compressed payload that expanded in memory. The resulting memory exhaustion could cause the operating system to terminate the Fluentd process, disrupting all log collection and forwarding on the affected node. This issue is fixed in version 0.5.3.
    Severity
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-16 16:01 UTC
    CWE
    • CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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                  },
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-16T16:01:56.034552Z",
                "version": "2.0.3"
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        ],
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          "dateUpdated": "2026-09-16T16:02:06.130Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "fluent-plugin-opentelemetry",
          "vendor": "fluent-plugins-nursery",
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            {
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            }
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        }
      ],
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            "attackVector": "NETWORK",
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            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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