MAL-2026-6731

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ue-jenkins-buildkite/MAL-2026-6731.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6731
Aliases
  • GHSA-8gxq-wrp7-qqv8
Published
2026-07-02T21:11:58Z
Modified
2026-07-10T03:31:49Z
Summary
Malicious code in ue-jenkins-buildkite (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (f3f4ff9ea00766589ae9dece7648aa4ce29ac9bc82173fce0a1adefaeb6c8f5a)

ue-jenkins-buildkite@99999.0.0 is a dependency-confusion package targeting an internal Epic Games / Unreal Engine CI namespace (name evokes Jenkins/Buildkite tooling; version 99999.0.0 is the canonical shape used to win private-registry resolution). Its package.json preinstall script runs automatically on npm install and performs installer-side credential harvest: it collects os.hostname(), username, cwd, platform, and arch; probes CI-specific environment variables (HORDE_AGENT, GITHUB_ACTIONS, JENKINS_URL, TEAMCITY_VERSION); and enumerates process.env filtering by the regex /^(AWS_|GITHUB_|GH_|NPM_|EPIC_|UE_|HORDE_|P4|CI|BUILD|TOKEN|KEY|SECRET)/i, taking up to 30 matching variables. The collected data is POSTed as JSON over plain HTTP to the bare-IP endpoint http://109.123.247.172/npm/ue_jenkins_buildkite, and an out-of-band DNS beacon is issued to -.ue_jenkins_buildkite.npm.epic-dc.oast.fun. The regex is a credential-shaped bulk scraper (AWS keys, GitHub tokens, npm publish tokens, generic TOKEN/KEY/SECRET variables) unrelated to any legitimate build-tool license check.

Source: ghsa-malware (55fd457fdd033f752d6550cdd66a9f0d98348f07c118af4e5f75a4eb9948b7d2)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Source: ossf-package-analysis (a67a3300cb2357e9661889459167d34c43be7925bd3d476d3a08588d9a907b59)

The OpenSSF Package Analysis project identified 'ue-jenkins-buildkite' @ 99999.0.0 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.
Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-07-02T21:28:57.400064411Z",
            "modified_time": "2026-07-02T21:11:58Z",
            "sha256": "a67a3300cb2357e9661889459167d34c43be7925bd3d476d3a08588d9a907b59",
            "source": "ossf-package-analysis",
            "versions": [
                "99999.0.0"
            ]
        },
        {
            "id": "IN-MAL-2026-008131",
            "import_time": "2026-07-08T17:01:32.991121468Z",
            "modified_time": "2026-07-08T16:29:12Z",
            "sha256": "f3f4ff9ea00766589ae9dece7648aa4ce29ac9bc82173fce0a1adefaeb6c8f5a",
            "source": "amazon-inspector",
            "versions": [
                "99999.0.0"
            ]
        },
        {
            "id": "GHSA-8gxq-wrp7-qqv8",
            "import_time": "2026-07-10T03:23:39.549591608Z",
            "modified_time": "2026-07-10T03:03:01Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "55fd457fdd033f752d6550cdd66a9f0d98348f07c118af4e5f75a4eb9948b7d2",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / ue-jenkins-buildkite

Package

Name
ue-jenkins-buildkite
View open source insights on deps.dev
Purl
pkg:npm/ue-jenkins-buildkite

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

99999.*
99999.0.0

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "package.json",
            "sha256": "cfd1777021f09ed166f3ac8da6422229f7daf73069334cf6bbdc80b92f49fce6",
            "tlsh": "b43152f0ba68ab7b1db18bd15630720292faf56b353188b1bdb350571bc37341e72628"
        }
    ],
    "package_integrity": [
        {
            "filename": "ue-jenkins-buildkite-99999.0.0.tgz",
            "hashes": {
                "sha1": "53e7d2140966fc459192142438f00b73e5530817",
                "sha512_sri": "sha512-mBHFEjHyouUbYM2Zuu7UAoLTtxgxbrMSeot526wOxu8jgdrrHb05zusFI/hzpaP3/uFW2Qfc5jC9iUAQkMMnOw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ue-jenkins-buildkite/MAL-2026-6731.json"