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Medium

Security advisory

Type: advisorySources: OSVCVE: CVE-2025-66843

grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the server and later executed when any other user views or edits the affected page.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-66843
Confirmed fixed CVEs
Not specified
Updated in this feed
8 Nov 2026, 02:37 UTC · Revision 1

Source evidence

CVE-2025-66843

core-osv · Original source

Published 15 Dec 2025, 00:00 UTC

grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the server and later executed when any other user views or edits the affected page.

osv:CVE-2025-66843
Complete source record
{
  "id": "768fc0ae75d00f2c6364312f1a7a7db691e49a4b64d1d1d233ab379289df024b",
  "url": "https://osv.dev/vulnerability/CVE-2025-66843",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-66843",
    "summary": "grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the server and later executed when any other user views or edits the affected page.",
    "evidence": "osv:CVE-2025-66843",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-66843",
      "aliases": [
        "CVE-2025-66843",
        "GHSA-mh85-44c2-3m97"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/getgrav/grav",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "35f5dd74fe2d67062bd60f69ab0d4819780d05b5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.7.49.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.7.49.4",
            "1.7.49.3",
            "1.7.49.2",
            "1.7.49.1",
            "1.7.49",
            "1.7.39.1",
            "1.7.39",
            "1.7.38",
            "1.7.37.1",
            "1.7.37",
            "1.7.36",
            "1.7.35",
            "1.7.34",
            "1.7.33",
            "1.7.32",
            "1.7.31",
            "1.7.30",
            "1.7.29.1",
            "1.7.29",
            "1.7.28",
            "1.7.27.1",
            "1.7.27",
            "1.7.26.1",
            "1.7.26",
            "1.7.25",
            "1.7.24",
            "1.7.23",
            "1.7.22",
            "1.7.21",
            "1.7.20",
            "1.7.19",
            "1.7.18",
            "1.7.17",
            "1.7.16",
            "1.7.15",
            "1.7.14",
            "1.7.13",
            "1.7.12",
            "1.7.10",
            "1.7.9",
            "1.7.8",
            "1.7.7",
            "1.7.6",
            "1.7.5",
            "1.7.4",
            "1.7.3",
            "1.7.1",
            "1.7.0",
            "1.7.0-rc.20",
            "1.7.0-rc.19",
            "1.7.0-rc.18",
            "1.7.0-rc.17",
            "1.7.0-rc.15",
            "1.7.0-rc.14",
            "1.7.0-rc.13",
            "1.7.0-rc.12",
            "1.7.0-rc.10",
            "1.7.0-rc.9",
            "1.7.0-rc.8",
            "1.7.0-rc.7",
            "1.7.0-rc.6",
            "1.7.0-rc.5",
            "1.7.0-rc.4",
            "1.7.0-rc.3",
            "1.7.0-rc.2",
            "1.7.0-rc.1",
            "1.7.0-beta.10",
            "1.7.0-beta.9",
            "1.7.0-beta.8",
            "1.7.0-beta.7",
            "1.7.0-beta.6",
            "1.7.0-beta.5",
            "1.7.0-beta.4",
            "1.7.0-beta.3",
            "1.7.0-beta.2",
            "1.7.0-beta.1",
            "1.6.0-rc.4",
            "1.6.0-rc.3",
            "1.6.0-rc.2",
            "1.6.0-rc.1",
            "1.6.0-beta.8",
            "1.6.0-beta.7",
            "1.6.0-beta.6",
            "1.6.0-beta.5",
            "1.6.0-beta.2",
            "1.6.0-beta.1",
            "1.5.0-rc.1",
            "1.5.0-beta.2",
            "1.5.0-beta.1",
            "1.3.0-rc.5",
            "1.3.0-rc.4",
            "1.3.0-rc.3",
            "1.3.0-rc.1",
            "1.2.0-rc.3",
            "1.2.0-rc.2",
            "1.2.0-rc.1",
            "1.1.9-rc.3",
            "1.1.9-rc.2",
            "1.1.9-rc.1",
            "1.1.0-rc.3",
            "1.1.0-rc.2",
            "1.1.0-rc.1",
            "1.1.0-beta.5",
            "1.1.0-beta.4",
            "1.1.0-beta.3",
            "1.1.0-beta.2",
            "1.1.0-beta.1",
            "0.9.19",
            "0.9.18",
            "0.9.17",
            "0.9.16",
            "0.9.15",
            "0.9.14",
            "0.9.13",
            "0.9.12",
            "0.9.11",
            "0.9.10",
            "0.9.9",
            "0.9.8",
            "0.9.7",
            "0.9.6",
            "0.9.5",
            "0.9.4",
            "0.9.3",
            "0.9.2",
            "0.9.0",
            "0.8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66843.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.934175094Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66843.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-66843",
        "https://github.com/Yohane-Mashiro/grav_cve/issues/1"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "1.7.49.5"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66843.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-66843",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521849,
  "published_at": "2025-12-15T00:00:00+00:00"
}