MAL-2026-14286

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@wizloft/harness-context/MAL-2026-14286.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-14286
Aliases
  • GHSA-wjhv-xmmw-qqf9
Published
2026-08-19T08:33:13Z
Modified
2026-09-23T01:00:12Z
Summary
Malicious code in @wizloft/harness-context (npm)
Details

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

Source: amazon-inspector (b0315deb3fb6b42e929a55eafaeaedbf1b428ee8873d4ae31f5ec9956f21b554)

dist/index.js (the package's declared main) contains a heavily obfuscated obfuscator.io-style IIFE appended after the legitimate context-service code. On import, the payload stashes global.r = require and global.m = module, then issues HTTPS requests to an Ethereum public RPC endpoint (h.drpc.org) and a block-explorer account API to read state from contract 0xa322E5f3..., using that state to resolve a next-stage URL that is fetched and executed in-process. The obfuscated string array (~303 entries via a rotated decoder) hides drpc.org, ?module=ac, POST, application/json, Mozilla/5., and the contract address. This is the EtherHiding loader pattern: attacker-controlled contract state serves as a mutable pointer to arbitrary code executed in the installer/consumer process at require time. Behavior does not match the package's advertised purpose of a small typed capability contract.

Source: ghsa-malware (e250ba61dd9623df22f284b1b5c2e41513954b57d1e4cc099f2321179a0673cc)

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.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-018408",
            "import_time":  "2026-08-19T08:48:53.666015613Z",
            "modified_time":  "2026-08-19T08:33:13Z",
            "sha256":  "b0315deb3fb6b42e929a55eafaeaedbf1b428ee8873d4ae31f5ec9956f21b554",
            "source":  "amazon-inspector",
            "versions":  [
                "0.1.1-alpha.3"
            ]
        },
        {
            "id":  "GHSA-wjhv-xmmw-qqf9",
            "import_time":  "2026-09-23T00:57:12.970849215Z",
            "modified_time":  "2026-09-23T00:24:45Z",
            "ranges":  [
                {
                    "events":  [
                        {
                            "introduced":  "0"
                        }
                    ],
                    "type":  "SEMVER"
                }
            ],
            "sha256":  "e250ba61dd9623df22f284b1b5c2e41513954b57d1e4cc099f2321179a0673cc",
            "source":  "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / @wizloft/harness-context

Package

Name
@wizloft/harness-context
View open source insights on deps.dev
Purl
pkg:npm/%40wizloft/harness-context

Affected ranges

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

Affected versions

0.*
0.1.1-alpha.3

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":  "dist/index.js",
            "sha256":  "d414e0737a498fe710e7ffb224de0ed14cf847bfc42b18529ca10d4e118882b9",
            "tlsh":  "64f294c4bbd0a44003076abb7b1bf4e5e56a08adb4844ac6f11cfe84fb96326d5f2531"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "harness-context-0.1.1-alpha.3.tgz",
            "hashes":  {
                "sha1":  "621a5786ea5e82611571caaebbbc0c45233746a7",
                "sha512_sri":  "sha512-QuJ0Zc/EozGNeGCAhDuryXKfykj8OtD6FrDttkKJiadHdjcl1uGKBXDFSVlpnEdLV+ZoIS8gm9N7buLA28FwGg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@wizloft/harness-context/MAL-2026-14286.json"