Vulnerabilities in pkg:golang/github.com/ipld/go-ipld-prime

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-w239-58x2-q8p5",
  "modified" : "2026-06-08T23:47:37Z",
  "published" : "2026-05-07T02:07:21Z",
  "aliases" : [ "CVE-2026-42328" ],
  "summary" : "go-ipld-prime's DAG-CBOR and DAG-JSON decoders have unbounded recursion depth",
  "details" : "The DAG-CBOR and DAG-JSON decoders recurse on each nested map or list without a depth limit. A payload containing deeply nested collections causes the decoder to recurse once per level, growing the goroutine stack until the Go runtime terminates the process with a fatal stack overflow (distinct from a recoverable panic).\n\nFor DAG-CBOR, a payload of approximately 2 MB, consisting of repeated `0x81` (array-of-1) bytes followed by a terminator, produces around 2 million recursion frames and reliably exhausts Go's default 1 GB goroutine stack. The existing allocation budget does not prevent this: each nested collection header costs only a handful of budget units, so the stack is exhausted before the budget is. DAG-JSON has equivalent exposure via `[[[...]]]`-style payloads; it has no budget system and is therefore unprotected against recursion depth as well.\n\nSchema-free decoding (using `basicnode.Prototype.Any`) allows arbitrary nesting depth. Schema-bound decoding bounds nesting only when the schema itself is non-recursive and contains no fields typed as `Any`; schemas with recursive type references or any `Any`-typed fields permit unconstrained nesting at those points.\n\nThe fix adds a configurable `MaxDepth` option to both decoders, defaulting to 1024 nested levels. The decoder returns `ErrDecodeDepthExceeded` when a payload nests beyond the limit. Well-formed IPLD data rarely approaches this depth in practice; the default is generous for legitimate use while preventing stack exhaustion.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/ipld/go-ipld-prime"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.23.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ipld/go-ipld-prime/security/advisories/GHSA-w239-58x2-q8p5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-42328"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ipld/go-ipld-prime"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-674" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-07T02:07:21Z",
    "nvd_published_at" : "2026-05-27T18:16:22Z"
  }
}