{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.11.1"
              },
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "3.3.6"
              },
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.1.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "45fd308014bf442bc2ab017d027b6865713f9f10"
            },
            {
              "introduced": "8faadabacd15c3e9dc3f5e95c7b32a2bfc153a8a"
            },
            {
              "fixed": "9aec999d89382e34125d5ad2bf5b1518f5167d62"
            },
            {
              "fixed": "86db711cbf34feee27d46a9c5810bb6abd49a4ff"
            },
            {
              "fixed": "ee24bd48b9c3ef693dc9965de8f0cc8020a7052c"
            },
            {
              "fixed": "1c1e29c7e8129cfbcae74558316ecd3ea50a8273"
            },
            {
              "fixed": "df28ea4e712f1e5bd0e42be4a3c5c750ca50764d"
            }
          ],
          "repo": "https://github.com/cakephp/authentication",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:cakephp:cakephp:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "3.3.6"
              },
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.1.1"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "09eb23891dc8134830f4e39e01a3a39f82935e41"
            },
            {
              "fixed": "71a2cf6bf38ef53423e63922669b6f526625a906"
            },
            {
              "introduced": "767b164747df789db8c0fbcf3bcf9eaf3be55b38"
            },
            {
              "fixed": "ec1afe59755717c25492bdb50efcd5f06fe52c0b"
            }
          ],
          "repo": "https://github.com/cakephp/cakephp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hhpq-7wg4-36jm"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55590.json"
  },
  "details": "CakePHP Authentication is an authentication plugin for CakePHP that can also be used in PSR-7 based applications. Prior to 2.11.1, 3.3.6, and 4.1.1, the getLoginRedirect() method contains a weakness to backslash bypasses that allows redirect targets with attacker-controlled hostnames through the redirect query string parameter. This issue is fixed in versions 2.11.1, 3.3.6, and 4.1.1.",
  "id": "CVE-2026-55590",
  "modified": "2026-07-16T03:30:48.675523518Z",
  "published": "2026-07-09T18:55:30.241Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/cakephp/authentication/releases/tag/2.11.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cakephp/authentication/releases/tag/3.3.6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cakephp/authentication/releases/tag/4.1.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55590.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/cakephp/authentication/security/advisories/GHSA-hhpq-7wg4-36jm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55590"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cakephp/authentication/commit/1c1e29c7e8129cfbcae74558316ecd3ea50a8273"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cakephp/authentication/commit/df28ea4e712f1e5bd0e42be4a3c5c750ca50764d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cakephp/authentication/commit/ee24bd48b9c3ef693dc9965de8f0cc8020a7052c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cakephp/authentication/pull/795"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cakephp/authentication/pull/796"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cakephp/authentication/pull/799"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CakePHP: Open redirect weakness via backslash bypass"
}