Resource budgets not enforced on the typed deserialization path

{
  "id": "f16dc1c34a98c1f3afc2aa76d2b3bc99c2127d51ae2d186d2b7618ec894af424",
  "url": "https://osv.dev/vulnerability/RUSTSEC-2026-0333",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Resource budgets not enforced on the typed deserialization path",
    "summary": "`ParserConfig::max_events`, `max_nodes`, `max_total_scalar_bytes`, `max_merge_keys`, `alias_anchor_ratio` and the alias jump factor were enforced only by the two `Value` loaders. A typed target with a default-shaped configuration is served by the streaming deserializer, which never read those fields, so tightening any of them had no effect on `from_str::` for a struct target. The default document-length, depth and alias-count caps were enforced on every path, so no input was unbounded; the gap affects callers who tightened the other budgets for hostile input. Version 0.0.53 charges every budget on the streaming path as well and adds cross-path parity tests. Users who cannot upgrade can deserialize into `noyalib::Value` first and convert with `from_value`, or rely on `max_document_length` and `max_depth`, which were always applied on every path.",
    "evidence": "osv:RUSTSEC-2026-0333",
    "products": [
      {
        "name": {
          "value": "noyalib",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.0.53",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "RUSTSEC-2026-0333",
      "aliases": [
        "GHSA-4xcc-23fx-w2wj",
        "RUSTSEC-2026-0333"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0.0.0-0"
                },
                {
                  "fixed": "0.0.53"
                }
              ]
            }
          ],
          "package": {
            "name": "noyalib",
            "purl": "pkg:cargo/noyalib",
            "ecosystem": "crates.io"
          },
          "database_specific": {
            "cvss": null,
            "source": "https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0333.json",
            "categories": [
              "denial-of-service"
            ],
            "informational": null
          },
          "ecosystem_specific": {
            "affects": {
              "os": [],
              "arch": [],
              "functions": [
                "noyalib::from_reader",
                "noyalib::from_reader_with_config",
                "noyalib::from_slice",
                "noyalib::from_slice_with_config",
                "noyalib::from_str",
                "noyalib::from_str_with_config"
              ]
            },
            "affected_functions": null
          }
        }
      ],
      "modified": "2026-10-08T15:00:03.204356893Z",
      "provider": "osv",
      "references": [
        "https://crates.io/crates/noyalib",
        "https://rustsec.org/advisories/RUSTSEC-2026-0333.html",
        "https://github.com/sebastienrousseau/noyalib/pull/470"
      ],
      "provider_metadata": {
        "license": "CC-BY-4.0"
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 99701,
  "published_at": "2026-10-06T12:00:00+00:00"
}