CVE-2026-61554

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Source
https://cve.org/CVERecord?id=CVE-2026-61554
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61554.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-61554
Aliases
Published
2026-09-15T20:48:05Z
Modified
2026-10-28T02:31:06Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
emp3r0r has an unauthenticated HTTP Polling DoS
Details

emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 4.2.5, the http_poll C2 transport accepts attacker-controlled HTTP polling sessions before CBOR MsgAuth authentication is completed. A remote unauthenticated attacker can create arbitrary polling sessions and send request bodies that are forwarded into the C2 dispatch path. This can consume server resources and trigger pre-auth C2 processing. Version 4.2.5 patches the issue.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61554.json"
}
References

Affected packages

Git / github.com/jm33-m0/emp3r0r

Affected ranges

Type
GIT
Repo
https://github.com/jm33-m0/emp3r0r
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
aed3d81641ab52f2b29a154b9cbd4f07e685abc0
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "4.2.5"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "original_tag": "v4.2.5",
            "range": [
                {
                    "fixed": "aed3d81641ab52f2b29a154b9cbd4f07e685abc0"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "4.2.5"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Affected versions

v0.*
v0.1
v0.2
v0.3
v0.4
v0.5
v0.6
v0.6.1
v0.6.2
v0.7
v0.8.1
v0.8.2
v0.8.3
v0.8.4
v0.8.5
v0.8.6
v0.8.7
v0.8.8
v0.8.9
v0.9.0
v0.9.1
v0.9.10
v0.9.11
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
v0.9.22
v0.9.23
v0.9.24
v0.9.25
v0.9.26
v0.9.27
v0.9.28
v0.9.29
v0.9.3
v0.9.31
v0.9.32
v0.9.33
v0.9.34
v0.9.35
v0.9.36
v0.9.37
v0.9.38
v0.9.39
v0.9.4
v0.9.40
v0.9.41
v0.9.42
v0.9.43
v0.9.44
v0.9.45
v0.9.46
v0.9.5
v0.9.6
v0.9.7
v0.9.8
v0.9.9
v1.*
v1.0.0
v1.0.1
v1.1.0
v1.1.1
v1.1.10
v1.1.11
v1.1.12
v1.1.2
v1.1.3
v1.1.4
v1.1.5
v1.1.6
v1.1.9
v1.10.2
v1.10.4
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.14.2
v1.14.5
v1.14.6
v1.14.7
v1.15.1
v1.15.2
v1.15.4
v1.15.5
v1.15.6
v1.15.7
v1.15.8
v1.15.9
v1.16.1
v1.16.2
v1.17.0
v1.17.2
v1.17.3
v1.17.4
v1.17.5
v1.18.0
v1.19.0
v1.19.1
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.2.5
v1.20.0
v1.22.0
v1.22.1
v1.22.3
v1.23.0
v1.23.1
v1.23.2
v1.23.4
v1.23.5
v1.23.6
v1.24.0
v1.24.1
v1.24.2
v1.25.0
v1.25.1
v1.25.2
v1.25.3
v1.25.4
v1.25.5
v1.25.6
v1.25.7
v1.25.8
v1.26.0
v1.26.1
v1.26.2
v1.26.3
v1.26.4
v1.26.5
v1.26.6
v1.26.7
v1.26.8
v1.27.0
v1.27.1
v1.27.2
v1.27.3
v1.28.0
v1.29.0
v1.29.1
v1.29.2
v1.29.3
v1.29.4
v1.29.5
v1.29.6
v1.29.7
v1.3.0
v1.3.1
v1.3.10
v1.3.11
v1.3.12
v1.3.14
v1.3.15
v1.3.16
v1.3.17
v1.3.18
v1.3.19
v1.3.2
v1.3.20
v1.3.3
v1.3.4
v1.3.5
v1.3.9
v1.30.0
v1.30.1
v1.30.5
v1.31.0
v1.31.1
v1.31.10
v1.31.12
v1.31.2
v1.31.3
v1.31.4
v1.31.5
v1.31.6
v1.31.7
v1.31.8
v1.31.9
v1.32.0
v1.32.1
v1.32.2
v1.32.3
v1.32.4
v1.32.5
v1.33.0
v1.33.1
v1.33.2
v1.33.3
v1.33.4
v1.33.5
v1.34.0
v1.34.1
v1.34.10
v1.34.2
v1.34.3
v1.34.4
v1.34.5
v1.34.6
v1.34.7
v1.34.8
v1.34.9
v1.35.0
v1.35.1
v1.35.2
v1.35.3
v1.36.0
v1.37.0
v1.37.1
v1.37.2
v1.37.4
v1.37.5
v1.37.6
v1.37.7
v1.37.8
v1.38.0
v1.38.1
v1.38.3
v1.38.4
v1.39.0
v1.39.1
v1.39.2
v1.39.3
v1.39.4
v1.39.5
v1.39.6
v1.39.7
v1.39.8
v1.39.9
v1.4.0
v1.4.1
v1.40.0
v1.40.1
v1.40.2
v1.40.3
v1.41.0
v1.42.1
v1.43.0
v1.43.1
v1.43.2
v1.43.3
v1.43.4
v1.44.0
v1.44.1
v1.44.2
v1.44.3
v1.44.4
v1.45.0
v1.45.1
v1.45.2
v1.46.0
v1.46.1
v1.47.0
v1.47.1
v1.48.0
v1.48.1
v1.48.10
v1.48.2
v1.48.3
v1.48.4
v1.48.6
v1.48.7
v1.48.8
v1.48.9
v1.49.0
v1.49.1
v1.49.2
v1.49.3
v1.49.5
v1.5.0
v1.5.1
v1.50.0
v1.50.1
v1.50.2
v1.50.3
v1.51.0
v1.51.1
v1.6.0
v1.6.10
v1.6.11
v1.6.12
v1.6.13
v1.6.3
v1.6.4
v1.6.5
v1.6.6
v1.6.7
v1.6.8
v1.6.9
v1.7.1
v1.7.2
v1.7.3
v1.7.4
v1.7.5
v1.7.6
v1.8.0
v1.8.1
v1.9.0
v2.*
v2.1.0
v2.2.0
v2.2.1
v2.2.10
v2.2.11
v2.2.2
v2.2.3
v2.2.4
v2.2.5
v2.2.7
v2.2.8
v2.2.9
v2.3.0
v2.4.1
v2.4.2
v3.*
v3.0.0
v3.1.1
v3.1.2
v3.1.3
v3.1.4
v3.10.0
v3.10.1
v3.10.3
v3.11.0
v3.11.1
v3.12.0
v3.13.0
v3.13.1
v3.13.2
v3.14.0
v3.14.1
v3.15.0
v3.15.1
v3.16.0
v3.16.1
v3.17.0
v3.17.1
v3.18.0
v3.18.1
v3.19.0
v3.19.1
v3.19.3
v3.2.0
v3.2.1
v3.2.2
v3.20.0
v3.20.1
v3.20.2
v3.21.0
v3.21.1
v3.21.3
v3.21.4
v3.22.0
v3.22.1
v3.3.0
v3.3.2
v3.4.0
v3.4.1
v3.4.2
v3.5.0
v3.5.1
v3.7.0
v3.7.1
v3.7.2
v3.7.3
v3.7.4
v3.8.1
v3.9.0
v3.9.1
v3.9.2
v3.9.3
v3.9.4
v3.9.5
v3.9.6
v4.*
v4.0.0
v4.0.1
v4.0.3
v4.1.0
v4.2.1
v4.2.2
v4.2.3
v4.2.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61554.json"