Improve GHSA-28xv-ph75-77wh: add Crow 4.x patched range

advisories/github-reviewed/2026/07/GHSA-28xv-ph75-77wh/GHSA-28xv-ph75-77wh.json

@@ -1,13 +1,13 @@
 {
   "schema_version": "1.4.0",
   "id": "GHSA-28xv-ph75-77wh",
-  "modified": "2026-07-14T19:40:05Z",
+  "modified": "2026-08-16T15:54:32Z",
   "published": "2026-07-14T19:40:05Z",
   "aliases": [
     "CVE-2026-54335"
   ],
   "summary": "Prototype pollution in @feathersjs/commons _.merge via JSON-parsed __proto__",
-  "details": "### Impact\n\nThe `_.merge(target, source)` utility exported by `@feathersjs/commons` recursively merges `source` into `target` by iterating `Object.keys(source)`. When `source` was produced by `JSON.parse` and contains a `__proto__` (or `constructor` / `prototype`) key, that key is returned as an own-enumerable property. The recursive merge then resolves `target['__proto__']` to `Object.prototype` and writes the attacker-supplied properties onto it, polluting the prototype for all plain objects in the process for the lifetime of the Node process.\n\n**Scope of real-world risk is limited.** No first-party Feathers package routes input — trusted or untrusted — through `commons._.merge`. The `@feathersjs/authentication` package, which does merge request-influenced data, uses `lodash/merge` (prototype-pollution-safe since 4.17.12), not this utility. Exploitation therefore requires a downstream plugin or application to pass JSON-parsed, attacker-controlled input directly through the exported `_.merge`.\n\n### Patches\n\nFixed in `@feathersjs/commons@5.0.45`. The fix skips `__proto__`, `constructor`, and `prototype` keys during iteration — the standard remediation used by lodash and others.\n\n### Workarounds\n\nAvoid passing JSON-parsed untrusted input through `commons._.merge`. Freezing `Object.prototype` or validating/sanitizing keys upstream also mitigates.\n\n### Credit\n\nReported responsibly by Andrew Ridings (@ridingsa).",
+  "details": "### Impact\n\nThe `_.merge(target, source)` utility exported by `@feathersjs/commons` recursively merges `source` into `target` by iterating `Object.keys(source)`. When `source` was produced by `JSON.parse` and contains a `__proto__` (or `constructor` / `prototype`) key, that key is returned as an own-enumerable property. The recursive merge then resolves `target['__proto__']` to `Object.prototype` and writes the attacker-supplied properties onto it, polluting the prototype for all plain objects in the process for the lifetime of the Node process.\n\n**Scope of real-world risk is limited.** No first-party Feathers package routes input \u2014 trusted or untrusted \u2014 through `commons._.merge`. The `@feathersjs/authentication` package, which does merge request-influenced data, uses `lodash/merge` (prototype-pollution-safe since 4.17.12), not this utility. Exploitation therefore requires a downstream plugin or application to pass JSON-parsed, attacker-controlled input directly through the exported `_.merge`.\n\n### Patches\n\n- **Feathers 5 (Dove):** fixed in `@feathersjs/commons@5.0.45` via https://github.com/feathersjs/feathers/pull/3690\n- **Feathers 4 (Crow):** fixed in `@feathersjs/commons@4.5.20` via https://github.com/feathersjs/feathers/pull/3695\n\nThe fix skips `__proto__`, `constructor`, and `prototype` keys during iteration \u2014 the standard remediation used by lodash and others.\n\nRecommended install targets:\n- Crow / Feathers 4: `@feathersjs/commons@4.5.21` or later (4.5.20 contains this security fix; 4.5.21 is the preferred Crow monorepo release)\n- Dove / Feathers 5: `@feathersjs/commons@5.0.45` or later\n\n### Workarounds\n\nAvoid passing JSON-parsed untrusted input through `commons._.merge`. Freezing `Object.prototype` or validating/sanitizing keys upstream also mitigates.\n\n### Credit\n\nReported responsibly by Andrew Ridings (@ridingsa).\n",
   "severity": [
     {
       "type": "CVSS_V3",
@@ -25,7 +25,29 @@
           "type": "ECOSYSTEM",
           "events": [
             {
-              "introduced": "0"
+              "introduced": "4.0.0"
+            },
+            {
+              "fixed": "4.5.20"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 4.5.19"
+      }
+    },
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "@feathersjs/commons"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "5.0.0"
             },
             {
               "fixed": "5.0.45"
@@ -51,13 +73,29 @@
       "type": "WEB",
       "url": "https://github.com/feathersjs/feathers/commit/28b3c03c63bdbff53115fdaa46c56980e7942acc"
     },
+    {
+      "type": "WEB",
+      "url": "https://github.com/feathersjs/feathers/pull/3695"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/feathersjs/feathers/commit/88794cc432ce09e5559780545faa8134359abcce"
+    },
     {
       "type": "PACKAGE",
       "url": "https://github.com/feathersjs/feathers"
     },
     {
       "type": "WEB",
       "url": "https://github.com/feathersjs/feathers/releases/tag/v5.0.45"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/feathersjs/feathers/releases/tag/v4.5.20"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/feathersjs/feathers/releases/tag/v4.5.21"
     }
   ],
   "database_specific": {
@@ -69,4 +107,4 @@
     "github_reviewed_at": "2026-07-14T19:40:05Z",
     "nvd_published_at": null
   }
-}
+}