rustsec-2025-0160
Vulnerability from osv_rustsec
Published
2025-01-30 12:00
Modified
2026-03-30 21:40
Summary
`custom-req-on-workers` was removed from crates.io for malicious code
Details

custom-req-on-workers was part of a campaign that attempted to exfiltrate environmental data from the host.

The malicious crate had 1 version published in January 2025, and had no evidence of actual usage. This crate had no dependencies on crates.io.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "malicious"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "custom-req-on-workers",
        "purl": "pkg:cargo/custom-req-on-workers"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "`custom-req-on-workers` was part of a campaign that attempted to exfiltrate\nenvironmental data from the host.\n\nThe malicious crate had 1 version published in January 2025, and had no\nevidence of actual usage. This crate had no dependencies on crates.io.",
  "id": "RUSTSEC-2025-0160",
  "modified": "2026-03-30T21:40:18Z",
  "published": "2025-01-30T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/custom-req-on-workers"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2025-0160.html"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "`custom-req-on-workers` was removed from crates.io for malicious code"
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.