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High

Grav: Stored XSS via Tag Injection

Type: advisorySources: OSV

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a low-privileged (with the ability to create a page) user can cause XSS with the injection of svg element. The XSS can further be escalated to dump the entire system information available under /admin/config/info whenever a Super Admin visits the page; which can further be chained with the use of admin-nonce to do a complete server compromise (RCE). This vulnerability is fixed in 2.0.0-beta.2.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-42611
Confirmed fixed CVEs
Not specified
Updated in this feed
8 Nov 2026, 01:16 UTC · Revision 1

Source evidence

Grav: Stored XSS via Tag Injection

core-osv · Original source

Published 11 May 2026, 15:20 UTC

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a low-privileged (with the ability to create a page) user can cause XSS with the injection of svg element. The XSS can further be escalated to dump the entire system information available under /admin/config/info whenever a Super Admin visits the page; which can further be chained with the use of admin-nonce to do a complete server compromise (RCE). This vulnerability is fixed in 2.0.0-beta.2.

osv:CVE-2026-42611
Complete source record
{
  "id": "2c084e6f7eb49d635cc919767875686179a914fd02418d9b8f16a2fc66f4f0db",
  "url": "https://osv.dev/vulnerability/CVE-2026-42611",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Grav: Stored XSS via Tag Injection",
    "summary": "Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a low-privileged (with the ability to create a page) user can cause XSS with the injection of svg element. The XSS can further be escalated to dump the entire system information available under /admin/config/info whenever a Super Admin visits the page; which can further be chained with the use of admin-nonce to do a complete server compromise (RCE). This vulnerability is fixed in 2.0.0-beta.2.",
    "evidence": "osv:CVE-2026-42611",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-42611",
      "aliases": [
        "CVE-2026-42611",
        "GHSA-w8cg-7jcj-4vv2"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/getgrav/grav",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3077b04b220318883ed34b6ae2a6cd0f25dba92e"
                },
                {
                  "fixed": "5a12f9be8314682c8713e569e330f11805d0a663"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.0-beta.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5a12f9be8314682c8713e569e330f11805d0a663"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.0.0-beta.1",
            "1.8.0-beta.29",
            "1.8.0-beta.28",
            "1.8.0-beta.27",
            "1.8.0-beta.26",
            "1.8.0-beta.25",
            "1.8.0-beta.24",
            "1.8.0-beta.23",
            "1.8.0-beta.22",
            "1.8.0-beta.21",
            "1.8.0-beta.20",
            "1.8.0-beta.19",
            "1.8.0-beta.18",
            "1.8.0-beta.17",
            "1.8.0-beta.16",
            "1.8.0-beta.15",
            "1.8.0-beta.14",
            "1.8.0-beta.13",
            "1.8.0-beta.12",
            "1.8.0-beta.11",
            "1.8.0-beta.10",
            "1.8.0-beta.9",
            "1.8.0-beta.8",
            "1.8.0-beta.7",
            "1.8.0-beta.6",
            "1.8.0-beta.5",
            "1.8.0-beta.4",
            "1.8.0-beta.3",
            "1.8.0-beta.2",
            "1.8.0-beta.1",
            "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-2026-42611.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.743200025Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42611.json",
        "https://github.com/getgrav/grav/security/advisories/GHSA-w8cg-7jcj-4vv2",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42611",
        "https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42611.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-42611",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521264,
  "published_at": "2026-05-11T15:20:47.89+00:00"
}