{"id":"CVE-2026-77634","aliases":["GHSA-2qh5-382h-3jpc"],"url":"https://o3.security/vulnerability/CVE-2026-77634","summary":"CakePHP: SmtpTransport vulnerable to CRLF header injection","details":"CakePHP is a rapid development framework for PHP. Prior to versions 4.5.12, 4.6.5, 5.1.8, 5.2.14, and 5.3.7 on their respective release lines, custom mail headers added with Message::setHeaders() or Message::addHeaders() do not have CRLF bytes removed, allowing header injection when user-controlled data is used in message headers. This issue is fixed in versions 4.5.12, 4.6.5, 5.1.8, 5.2.14, and 5.3.7.","published":"2026-08-24T20:33:46.836Z","modified":"2026-09-11T03:31:00.002812792Z","cvss":null,"epss":{"score":0.00312,"percentile":0.24135,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"cakephp/cakephp","fixedVersion":"4.5.12"},{"ecosystem":"Packagist","name":"cakephp/cakephp","fixedVersion":"4.6.5"},{"ecosystem":"Packagist","name":"cakephp/cakephp","fixedVersion":"5.1.9"},{"ecosystem":"Packagist","name":"cakephp/cakephp","fixedVersion":"5.2.14"},{"ecosystem":"Packagist","name":"cakephp/cakephp","fixedVersion":"5.3.7"}],"fix":{"url":"https://github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41","label":"cakephp/cakephp@0818896"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77634.json"},{"type":"ADVISORY","url":"https://github.com/cakephp/cakephp/security/advisories/GHSA-2qh5-382h-3jpc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77634"},{"type":"FIX","url":"https://github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41"},{"type":"FIX","url":"https://github.com/cakephp/cakephp/commit/2afe42b02d8ddc5d442bca5e8bb61910a727646e"},{"type":"FIX","url":"https://github.com/cakephp/cakephp/commit/3e09dae6cbdc983754fa3a8e6aae74da102a3ea1"},{"type":"FIX","url":"https://github.com/cakephp/cakephp/commit/b67b622457362b075bb37e625a82af73a0b3c9c3"},{"type":"PACKAGE","url":"https://github.com/cakephp/cakephp"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-11T03:31:00.002812792Z"}}