{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:getgrav:grav:1.7.42:*:*:*:*:*:*:*",
              "cpe:2.3:a:getgrav:grav:1.7.42.1:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "1.7.42"
              },
              {
                "last_affected": "1.7.42"
              },
              {
                "introduced": "1.7.42.1"
              },
              {
                "last_affected": "1.7.42.1"
              }
            ],
            "source": [
              "CPE_STRING",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "dc209453d0817547db0d3a8b27110decb63f2b5d"
            },
            {
              "fixed": "71bbed12f950de8335006d7f91112263d8504f1b"
            },
            {
              "fixed": "b4c62101a43051fc7f5349c7d0a5b6085375c1d7"
            }
          ],
          "repo": "https://github.com/getgrav/grav",
          "type": "GIT"
        }
      ],
      "versions": [
        "1.7.42",
        "1.7.42.1"
      ]
    }
  ],
  "aliases": [
    "GHSA-9436-3gmp-4f53"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-393",
      "CWE-74"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37897.json"
  },
  "details": "Grav is a file-based Web-platform built in PHP. Grav is subject to a server side template injection (SSTI) vulnerability. The fix for another SSTI vulnerability using `|map`, `|filter` and `|reduce` twigs implemented in the commit `71bbed1` introduces bypass of the denylist due to incorrect return value from `isDangerousFunction()`, which allows to execute the payload prepending double backslash (`\\\\`). The `isDangerousFunction()` check in version 1.7.42 and onwards retuns `false` value instead of `true` when the `\\` symbol is found in the `$name`. This vulnerability can be exploited if the attacker has access to: 1. an Administrator account, or 2. a non-administrator, user account that has Admin panel access and Create/Update page permissions. A fix for this vulnerability has been introduced in commit `b4c6210` and is included in release version `1.7.42.2`. Users are advised to upgrade. There are no known workarounds for this vulnerability.\n\n",
  "id": "CVE-2023-37897",
  "modified": "2026-07-08T05:37:48.720612221Z",
  "published": "2023-07-18T20:22:13.008Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37897.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/getgrav/grav/security/advisories/GHSA-9436-3gmp-4f53"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37897"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav/commit/71bbed12f950de8335006d7f91112263d8504f1b"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav/commit/b4c62101a43051fc7f5349c7d0a5b6085375c1d7"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Server-side Template Injection (SSTI) in grav"
}