GHSA-2C6H-4899-WJXR

Vulnerability from github – Published: 2026-04-04 05:45 – Updated: 2026-04-04 05:45
VLAI
Summary
scaly: Multiple soundness issues in Rust safe APIs
Details

Affected versions contain multiple safe APIs that can trigger undefined behavior:

  • Array<T>::index can perform an out-of-bounds read.
  • String::get_length can perform an out-of-bounds read.
  • String::append_character can perform an invalid write.
  • String::to_c_string can perform an out-of-bounds write.

These issues were reproduced against scaly 0.0.37 under Miri. The crate is unmaintained.

Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "scaly"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.0.37"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-125",
      "CWE-787"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-04T05:45:17Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Affected versions contain multiple safe APIs that can trigger undefined behavior:\n\n- `Array\u003cT\u003e::index` can perform an out-of-bounds read.\n- `String::get_length` can perform an out-of-bounds read.\n- `String::append_character` can perform an invalid write.\n- `String::to_c_string` can perform an out-of-bounds write.\n\nThese issues were reproduced against `scaly` 0.0.37 under Miri. The crate is unmaintained.",
  "id": "GHSA-2c6h-4899-wjxr",
  "modified": "2026-04-04T05:45:50Z",
  "published": "2026-04-04T05:45:17Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rustsec/advisory-db/issues/2594"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rschleitzer/Scaly"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0080.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "scaly: Multiple soundness issues in Rust safe APIs"
}


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