Publish GHSA-hf2r-9gf9-rwch

Author: advisory-database[bot]

advisories/github-reviewed/2026/03/GHSA-hf2r-9gf9-rwch/GHSA-hf2r-9gf9-rwch.json

@@ -0,0 +1,68 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-hf2r-9gf9-rwch",
+  "modified": "2026-03-26T18:50:34Z",
+  "published": "2026-03-26T18:50:33Z",
+  "aliases": [
+    "CVE-2026-33863"
+  ],
+  "summary": "Convict has prototype pollution via load(), loadFile(), and schema initialization",
+  "details": "### Impact\nTwo unguarded prototype pollution paths exist, not covered by previous fixes:\n\n1. `config.load()` / `config.loadFile()` — `overlay()` recursively merges config data without checking for forbidden keys. Input containing` __proto__` or `constructor.prototype` (e.g. from a JSON file) causes the recursion to reach `Object.prototype` and write attacker-controlled values onto it.\n2. Schema initialization — passing a schema with `constructor.prototype.*` keys to `convict({...})` causes default-value propagation to write directly to `Object.prototype` at startup.\n\nDepending on how polluted properties are consumed, impact ranges from unexpected behavior to authentication bypass or RCE.\n\n### Workarounds\nDo not pass untrusted data to load(), loadFile(), or convict().\n\n### Resources\nPrior advisory: [GHSA-44fc-8fm5-q62h](https://github.com/mozilla/node-convict/security/advisories/GHSA-44fc-8fm5-q62h)\nRelated issue: [https://github.com/mozilla/node-convict/issues/423](https://github.com/mozilla/node-convict/issues/423)",
+  "severity": [
+    {
+      "type": "CVSS_V4",
+      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "convict"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "6.2.5"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 6.2.4"
+      }
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/mozilla/node-convict/security/advisories/GHSA-44fc-8fm5-q62h"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/mozilla/node-convict/security/advisories/GHSA-hf2r-9gf9-rwch"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/mozilla/node-convict/issues/423"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/mozilla/node-convict"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-1321"
+    ],
+    "severity": "CRITICAL",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-03-26T18:50:33Z",
+    "nvd_published_at": null
+  }
+}