Publish GHSA-g2pg-6438-jwpf

Author: advisory-database[bot]

advisories/github-reviewed/2026/01/GHSA-g2pg-6438-jwpf/GHSA-g2pg-6438-jwpf.json

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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-g2pg-6438-jwpf",
+  "modified": "2026-01-15T22:15:18Z",
+  "published": "2026-01-15T22:15:18Z",
+  "aliases": [
+    "CVE-2026-22775"
+  ],
+  "summary": "devalue vulnerable to denial of service due to memory/CPU exhaustion in devalue.parse",
+  "details": "## Summary\n\nCertain inputs can cause `devalue.parse` to consume excessive CPU time and/or memory, potentially leading to denial of service in systems that parse input from untrusted sources. This affects applications using `devalue.parse` on externally-supplied data. The root cause is the `ArrayBuffer` hydration expecting base64 encoded strings as input, but not checking the assumption before decoding the input.\n\n## Details\n\nThe parser's `ArrayBuffer` hydration logic does not properly validate input before processing. Specially crafted inputs can cause disproportionate memory allocation or CPU usage on the receiving system.\n\n## Impact\n\nThis is a denial of service vulnerability affecting systems that use `devalue.parse` to handle data from potentially untrusted sources.\n\nAffected systems should upgrade to patched versions immediately.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "devalue"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "5.1.0"
+            },
+            {
+              "fixed": "5.6.2"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/sveltejs/devalue/security/advisories/GHSA-g2pg-6438-jwpf"
+    },
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22775"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/sveltejs/devalue/commit/11755849fa0634ae294a15ec0aef2f43efcad7c4"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/sveltejs/devalue"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/sveltejs/devalue/releases/tag/v5.6.2"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-405"
+    ],
+    "severity": "HIGH",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-01-15T22:15:18Z",
+    "nvd_published_at": "2026-01-15T19:16:05Z"
+  }
+}