{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "6.4.0"
              },
              {
                "fixed": "6.4.40"
              },
              {
                "introduced": "7.0.0"
              },
              {
                "fixed": "7.4.12"
              },
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.0.12"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "1b49ad8e9f2c3ceec011d67ac09e774e4107416b"
            },
            {
              "fixed": "816860d96c4fb7ffd7708ae0531ea6e5a1190773"
            },
            {
              "introduced": "f84d7d3c93e6a884908402775199b1f7d55c7be1"
            },
            {
              "fixed": "1fc7ca636cbd2cad29b42cc13c9fd0c681c6efee"
            },
            {
              "introduced": "bea6dc79db4d95c34b77ec27273d812aa64d65be"
            },
            {
              "fixed": "d776945b2dc41c0e609c56c1ef69863ab56856ed"
            }
          ],
          "repo": "https://github.com/symfony/security-http",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "6.4.0"
              },
              {
                "fixed": "6.4.40"
              },
              {
                "introduced": "7.0.0"
              },
              {
                "fixed": "7.4.12"
              },
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.0.12"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "228a275ddcc1a4301fc8865945c0686b56658135"
            },
            {
              "fixed": "95a951788e30c45356278f4e4472cbbf552d0eb9"
            },
            {
              "introduced": "d78c5f403d7ee794993660b1d5155536edd36fc1"
            },
            {
              "fixed": "275f5cbccbcc50205206f05e599c4f57009aadb8"
            },
            {
              "introduced": "2e913a829cfbbf9cb38b321bdff1806b44b192eb"
            },
            {
              "fixed": "06d3b2c9a8aeb5d8493738cc51e24f6a1215827c"
            },
            {
              "fixed": "3e52bf5ab733ee32e35eeeeb2631d859c941838e"
            },
            {
              "fixed": "4aaa45dd054f73445f1ab254968b7e60b546cc77"
            }
          ],
          "repo": "https://github.com/symfony/symfony",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-64hg-93w9-fc35"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-287",
      "CWE-306"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45754.json"
  },
  "details": "Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, the Mailjet mailer bridge and LOX24 notifier bridge webhook parsers received configured webhook secrets but did not verify them, allowing unauthenticated POST requests to inject forged Mailjet and LOX24 event payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.",
  "id": "CVE-2026-45754",
  "modified": "2026-07-17T03:41:43.974494150Z",
  "published": "2026-07-14T18:54:24.337Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/releases/tag/v6.4.40"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/releases/tag/v7.4.12"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/releases/tag/v8.0.12"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45754.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/symfony/symfony/security/advisories/GHSA-64hg-93w9-fc35"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45754"
    },
    {
      "type": "FIX",
      "url": "https://github.com/symfony/symfony/commit/3e52bf5ab733ee32e35eeeeb2631d859c941838e"
    },
    {
      "type": "FIX",
      "url": "https://github.com/symfony/symfony/commit/4aaa45dd054f73445f1ab254968b7e60b546cc77"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Symfony: Mailjet Mailer Webhook Parser Never Verifies the Configured Secret — Unauthenticated Webhook Event Injection"
}