Security advisory

{
  "id": "02587b73bf5b5cdeec2b0f41d06bf3a5d3ee42147bf1afb559cb38e8c4164bfa",
  "url": "https://osv.dev/vulnerability/CVE-2018-15133",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-15133",
    "summary": "In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. The attacker must know the application key, which normally would never occur, but could happen if the attacker previously had privileged access or successfully accomplished a previous attack.",
    "evidence": "osv:CVE-2018-15133",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-15133",
      "aliases": [
        "CVE-2018-15133",
        "GHSA-qvqm-h22r-4cp9"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/laravel/framework",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "d724ce0aa61bbd9adf658215eec484f5dd6711d6"
                },
                {
                  "introduced": "56a58e0fa3d845bb992d7c64ac9bb6d0c24b745a"
                },
                {
                  "last_affected": "acc6b5c54ab196d3358f60acc5f55d9ebaaccc02"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:laravel:laravel:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "5.5.40"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:laravel:laravel:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.6.0"
                      },
                      {
                        "last_affected": "5.6.29"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v5.5.40",
            "v5.5.39",
            "v5.5.38",
            "v5.5.37",
            "v5.5.36",
            "v5.5.35",
            "v5.5.34",
            "v5.5.33",
            "v5.5.32",
            "v5.5.31",
            "v5.5.30",
            "v5.5.29",
            "v5.5.28",
            "v5.5.27",
            "v5.5.26",
            "v5.5.25",
            "v5.5.24",
            "v5.5.23",
            "v5.5.22",
            "v5.5.21",
            "v5.5.20",
            "v5.5.19",
            "v5.5.18",
            "v5.5.17",
            "v5.5.16",
            "v5.5.15",
            "v5.5.14",
            "v5.5.13",
            "v5.5.12",
            "v5.5.10",
            "v5.5.9",
            "v5.5.7",
            "v5.5.6",
            "v5.5.5",
            "v5.5.4",
            "v5.5.3",
            "v5.5.2",
            "v5.5.1",
            "v5.5.0",
            "v4.1.0",
            "v4.0.0",
            "v4.0.0-BETA4",
            "v4.0.0-BETA3",
            "v4.0.0-BETA2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-15133.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:24.814955999Z",
      "provider": "osv",
      "references": [
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-15133",
        "https://laravel.com/docs/5.6/upgrade#upgrade-5.6.30"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:laravel:laravel:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "laravel:laravel",
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "5.5.40"
                  },
                  {
                    "introduced": "5.6.0"
                  },
                  {
                    "last_affected": "5.6.29"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-15133",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431226,
  "published_at": "2018-08-09T19:29:00.333+00:00"
}