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Malicious code in larchworker (PyPI)

Type: advisorySources: OSV

--- _-= Per source details. Do not edit below this line.=-_ ## Source: kam193 (87e174c9dc2485263894e4d6c3d1560589659afbfbe9397ca1e1b53fb21d96b3) This campaign consists of similar loader packages, which provide executing code from a given URL. While they do not contain the malicious payload and the usage remains unknown, they are clearly a coordinated campaign to place multiple deceptive ways to load malicious code. --- Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-10-voice-synthesis-profiles Reasons (based on the campaign): - other - Downloads and executes a remote malicious script.

Products
larchworker
Affected versions
0.1.0
Fixed versions
Not specified
CVEs
Not specified
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 21:55 UTC · Revision 1

Source evidence

Malicious code in larchworker (PyPI)

core-osv · Original source

Published 23 Oct 2026, 15:52 UTC

--- _-= Per source details. Do not edit below this line.=-_ ## Source: kam193 (87e174c9dc2485263894e4d6c3d1560589659afbfbe9397ca1e1b53fb21d96b3) This campaign consists of similar loader packages, which provide executing code from a given URL. While they do not contain the malicious payload and the usage remains unknown, they are clearly a coordinated campaign to place multiple deceptive ways to load malicious code. --- Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-10-voice-synthesis-profiles Reasons (based on the campaign): - other - Downloads and executes a remote malicious script.

osv:MAL-2026-18230

larchworker

Fixed versions: Not specified

Complete source record
{
  "id": "5432eb2eab69c29ed157dc00ab2214e011fb608083eaf6fadcb8a0649a6901ba",
  "url": "https://osv.dev/vulnerability/MAL-2026-18230",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Malicious code in larchworker (PyPI)",
    "summary": "--- _-= Per source details. Do not edit below this line.=-_ ## Source: kam193 (87e174c9dc2485263894e4d6c3d1560589659afbfbe9397ca1e1b53fb21d96b3) This campaign consists of similar loader packages, which provide executing code from a given URL. While they do not contain the malicious payload and the usage remains unknown, they are clearly a coordinated campaign to place multiple deceptive ways to load malicious code. --- Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-10-voice-synthesis-profiles Reasons (based on the campaign): - other - Downloads and executes a remote malicious script.",
    "evidence": "osv:MAL-2026-18230",
    "products": [
      {
        "name": {
          "value": "larchworker",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.1.0",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "MAL-2026-18230",
      "aliases": [
        "MAL-2026-18230"
      ],
      "affected": [
        {
          "package": {
            "name": "larchworker",
            "purl": "pkg:pypi/larchworker",
            "ecosystem": "PyPI"
          },
          "versions": [
            "0.1.0"
          ],
          "database_specific": {
            "source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/larchworker/MAL-2026-18230.json"
          }
        }
      ],
      "modified": "2026-10-23T16:31:11.307430428Z",
      "provider": "osv",
      "references": [
        "https://bad-packages.kam193.eu/pypi/package/larchworker"
      ],
      "provider_metadata": {
        "malicious-packages-origins": [
          {
            "id": "pypi/2026-10-voice-synthesis-profiles/larchworker",
            "sha256": "87e174c9dc2485263894e4d6c3d1560589659afbfbe9397ca1e1b53fb21d96b3",
            "source": "kam193",
            "versions": [
              "0.1.0"
            ],
            "import_time": "2026-10-23T16:20:13.980817633Z",
            "modified_time": "2026-10-23T15:52:41.369222Z"
          }
        ]
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 414902,
  "published_at": "2026-10-23T15:52:41+00:00"
}