MAL-2026-12845

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-timeline-ui/MAL-2026-12845.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12845
Aliases
  • GHSA-27r4-hvh7-4hmh
Published
2026-08-05T15:02:00Z
Modified
2026-08-06T01:20:00.585579592Z
Summary
Malicious code in bigops-timeline-ui (npm)
Details

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

Source: amazon-inspector (4a6a5b474ef344ddb8aa478f73099e3644817aa8a87199eaa3c46f03d27baa13)

On require() of bigops-timeline-ui, index.js loads./adapter.js which fetches a platform-specific binary from Cloudflare Workers hosts whose names are assembled at runtime from split string fragments (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT-record fallback channel under *.dl.wel1.ru that reassembles a base64-encoded binary from numbered subdomain lookups. The fetched bytes are written to a hidden temp file using cover-story names (.cache<hex> on POSIX, dotnetdiag<hex>.exe on Windows), chmod 0755 is applied, and the file is spawned detached via /bin/sh -c or cmd.exe /c start. There is no version pinning, no hash or signature verification, and the destinations are unrelated to any documented publisher for a timeline UI package. Runtime hostname construction and the DNS TXT transport are anti-analysis measures rather than legitimate delivery mechanisms.

Source: ghsa-malware (17c5b41f53712479719dd2f413015f89b1c0f2149ccead54ff536e261cf245dd)

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": [
        {
            "versions": [
                "35.5.8"
            ],
            "id": "IN-MAL-2026-015541",
            "import_time": "2026-08-05T15:19:56.900464648Z",
            "modified_time": "2026-08-05T15:02:00Z",
            "source": "amazon-inspector",
            "sha256": "4a6a5b474ef344ddb8aa478f73099e3644817aa8a87199eaa3c46f03d27baa13"
        },
        {
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-27r4-hvh7-4hmh",
            "import_time": "2026-08-06T00:58:53.254453833Z",
            "modified_time": "2026-08-05T18:43:38Z",
            "source": "ghsa-malware",
            "sha256": "17c5b41f53712479719dd2f413015f89b1c0f2149ccead54ff536e261cf245dd"
        }
    ]
}
References
Credits

Affected packages

npm / bigops-timeline-ui

Package

Name
bigops-timeline-ui
View open source insights on deps.dev
Purl
pkg:npm/bigops-timeline-ui

Affected ranges

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

Affected versions

35.*
35.5.8

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-timeline-ui/MAL-2026-12845.json"
indicators 
{
    "package_integrity": [
        {
            "filename": "bigops-timeline-ui-35.5.8.tgz",
            "hashes": {
                "sha512_sri": "sha512-Qp24/WmtG3hXA6G3j7g6mYD85QwT3U3KPHFnixYAUlcIs93CFfsD8iu0gYjHbeUnRK2sAme2I6j6bcf1z1LVOA==",
                "sha1": "37ae057852217cf01b947c7e0ce3711604b86658"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_adapter.js",
            "tlsh": "95a185a616aa70188bb09bf4cb175419f65af6633780c2d4fb9c65941fb212483f1efc",
            "sha256": "23619a7d8d711156f0fe80d183fe88e476da4ecf1fb4103ef38c7d8105a7a1eb"
        }
    ]
}