{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Scriban"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-674"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-24T22:06:24Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Summary\nStackOverflowException via nested array initializers bypasses ExpressionDepthLimit fix (GHSA-wgh7-7m3c-fx25)\n\n### Details\nThe recent fix for GHSA-wgh7-7m3c-fx25 (uncontrolled recursion in parser) added `ExpressionDepthLimit` defaulting to 250. However, deeply nested **array initializers** (`[[[[...`) recurse through `ParseArrayInitializer` \u2192 `ParseExpression` \u2192 `ParseArrayInitializer`, which is a **different recursion path** not covered by the expression depth counter.\n\nThis causes a `StackOverflowException` on current main (commit b5ac4bf - \"Add limits for default safety\").\n\n### PoC\n```\nusing Scriban;\n\n// ExpressionDepthLimit (default 250) does NOT prevent this crash\nstring nested = \"{{ \" + new string(\u0027[\u0027, 5000) + \"1\" + new string(\u0027]\u0027, 5000) + \" }}\";\nTemplate.Parse(nested); // StackOverflowException - process terminates\n```\n\n### Impact\nSame as GHSA-wgh7-7m3c-fx25: High severity. StackOverflowException cannot be caught with try/catch in .NET - the process terminates immediately. Any application calling Template.Parse with untrusted input is vulnerable, even with the new default ExpressionDepthLimit enabled.",
  "id": "GHSA-p6q4-fgr8-vx4p",
  "modified": "2026-03-24T22:06:24Z",
  "published": "2026-03-24T22:06:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/scriban/scriban/security/advisories/GHSA-p6q4-fgr8-vx4p"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-wgh7-7m3c-fx25"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/scriban/scriban"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Scriban has a Stack Overflow via Nested Array Initializers That Bypass the ExpressionDepthLimit Fix"
}