CVE-2026-44161

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Source
https://cve.org/CVERecord?id=CVE-2026-44161
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-44161.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-44161
Aliases
Downstream
Published
2026-07-08T21:25:43.892Z
Modified
2026-07-17T21:12:35.790405050Z
Severity
  • 7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L CVSS Calculator
Summary
Fluentd: Server-Side Request Forgery (SSRF) via Placeholder Expansion in `out_http`
Details

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, the Fluentd out_http output plugin allows placeholders such as ${tag} in the endpoint configuration parameter, and if a placeholder value is derived from untrusted input an attacker can control the destination hostname of outbound HTTP requests and force requests to arbitrary internal services. This issue is fixed in version 1.19.3.

Database specific 
{
    "cwe_ids": [
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44161.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/fluent/fluentd

Affected ranges

Type
GIT
Repo
https://github.com/fluent/fluentd
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
43c860907e3d6a92c922233fd16eb2ed9ea16b69
Fixed
c6a01ea2e0ea01977f8d615f7c6dbfae4cba88c9
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.19.3"
        }
    ],
    "cpe": "cpe:2.3:a:fluentd:fluentd:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.10.0
v0.10.1
v0.10.10
v0.10.11
v0.10.12
v0.10.13
v0.10.14
v0.10.15
v0.10.16
v0.10.17
v0.10.18
v0.10.19
v0.10.2
v0.10.20
v0.10.21
v0.10.22
v0.10.23
v0.10.24
v0.10.25
v0.10.26
v0.10.27
v0.10.28
v0.10.3
v0.10.30
v0.10.31
v0.10.32
v0.10.34
v0.10.35
v0.10.36
v0.10.37
v0.10.38
v0.10.39
v0.10.40
v0.10.41
v0.10.42
v0.10.43
v0.10.44
v0.10.45
v0.10.46
v0.10.47
v0.10.48
v0.10.49
v0.10.5
v0.10.50
v0.10.51
v0.10.52
v0.10.53
v0.10.6
v0.10.8
v0.10.9
v0.12.0.pre.1
v0.12.0.pre.2
v0.12.1
v0.12.10
v0.12.11
v0.12.12
v0.12.13
v0.12.14
v0.12.15
v0.12.16
v0.12.2
v0.12.3
v0.12.4
v0.12.5
v0.12.6
v0.12.7
v0.12.8
v0.12.9
v0.14.0
v0.14.0.pre.1
v0.14.0.rc.1
v0.14.0.rc.2
v0.14.0.rc.3
v0.14.1
v0.14.10
v0.14.11
v0.14.12
v0.14.13
v0.14.14
v0.14.14.pre.1
v0.14.15
v0.14.16
v0.14.17
v0.14.18
v0.14.19
v0.14.2
v0.14.20
v0.14.20.rc1
v0.14.21
v0.14.22
v0.14.22.rc1
v0.14.22.rc2
v0.14.23
v0.14.23.rc1
v0.14.24
v0.14.25
v0.14.4
v0.14.5
v0.14.7
v0.14.8
v0.14.9
v0.9.0
v0.9.1
v0.9.10
v0.9.11
v0.9.12
v0.9.13
v0.9.14
v0.9.15
v0.9.16
v0.9.17
v0.9.18
v0.9.19
v0.9.2
v0.9.20
v0.9.21
v0.9.3
v0.9.4
v0.9.5
v0.9.6
v0.9.7
v0.9.8
v0.9.9
v1.*
v1.0.0
v1.0.0.rc1
v1.0.1
v1.0.2
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.10.0
v1.10.1
v1.10.2
v1.10.3
v1.10.4
v1.11.0
v1.11.1
v1.11.2
v1.11.3
v1.11.4
v1.11.5
v1.12.0
v1.12.0.rc1
v1.12.0.rc2
v1.12.1
v1.12.2
v1.12.3
v1.13.0
v1.13.1
v1.13.2
v1.13.3
v1.14.0
v1.14.0.rc
v1.14.1
v1.14.2
v1.14.3
v1.14.4
v1.14.5
v1.14.6
v1.15.0
v1.15.1
v1.15.2
v1.15.3
v1.16.0
v1.16.1
v1.16.2
v1.17.0
v1.17.1
v1.18.0
v1.19.0
v1.19.1
v1.19.2
v1.2.0
v1.2.0.pre1
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.2.4.rc1
v1.2.5
v1.2.5.rc1
v1.2.6
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.4.0
v1.4.1
v1.4.2
v1.5.0
v1.5.0.rc1
v1.5.1
v1.6.0
v1.6.1
v1.6.2
v1.7.0
v1.7.0.rc1
v1.7.1
v1.7.2
v1.7.3
v1.8.0
v1.8.0.rc1
v1.8.0.rc2
v1.8.0.rc3
v1.8.1
v1.9.0
v1.9.0.rc1
v1.9.0.rc2
v1.9.1
v1.9.2
v1.9.3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-44161.json"