rustsec-2026-0130
Vulnerability from osv_rustsec
Published
2026-05-02 12:00
Modified
2026-05-13 12:34
Summary
Out-of-bounds read/write in `Index` and `IndexMut` implementations
Details

The Index and IndexMut implementations for Caja use unchecked pointer arithmetic without bounds validation. Creating a Caja with a small key and then accessing an out-of-range index causes out-of-bounds reads or writes beyond the allocated memory.

This can be triggered through safe public APIs — the [] indexing operator on a Caja with an out-of-range index — with no unsafe required from the caller.

To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": null,
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "caja",
        "purl": "pkg:cargo/caja"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.3.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The `Index` and `IndexMut` implementations for `Caja` use unchecked pointer\narithmetic without bounds validation. Creating a `Caja` with a small key and\nthen accessing an out-of-range index causes out-of-bounds reads or writes\nbeyond the allocated memory.\n\nThis can be triggered through safe public APIs \u2014 the `[]` indexing operator\non a `Caja` with an out-of-range index \u2014 with no `unsafe` required from the\ncaller.",
  "id": "RUSTSEC-2026-0130",
  "modified": "2026-05-13T12:34:44Z",
  "published": "2026-05-02T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/caja"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0130.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/EmanuelGCC/Caja/issues/1"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Out-of-bounds read/write in `Index` and `IndexMut` implementations"
}


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