GHSA-2qh5-382h-3jpc
CakePHP: SmtpTransport vulnerable to CRLF header injection
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | cakephp/cakephp | >= 4.5.0, < 4.5.12 | 4.5.12 |
| Packagist | cakephp/cakephp | >= 4.6.0, < 4.6.5 | 4.6.5 |
| Packagist | cakephp/cakephp | >= 5.0.0, < 5.1.9 | 5.1.9 |
| Packagist | cakephp/cakephp | >= 5.2.0, < 5.2.14 | 5.2.14 |
| Packagist | cakephp/cakephp | >= 5.3.0, < 5.3.7 | 5.3.7 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
Custom mail headers added with `Message::setHeaders()` or `addHeaders()` do not have CRLF replaced allowing header injection if user controlled data is added to message headers without stripping CRLF bytes.
### Patches
5.3.7, 5.2.14, 5.1.9, 4.6.5, 4.5.12 contain fixes for this issue.
### Workarounds
You can strip CRLF bytes from email header values before setting header values.
References
External links from the advisory. They lead to third-party sites.
- https://github.com/cakephp/cakephp/security/advisories/GHSA-2qh5-382h-3jpc
- https://nvd.nist.gov/vuln/detail/CVE-2026-77634
- https://github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41
- https://github.com/cakephp/cakephp/commit/2afe42b02d8ddc5d442bca5e8bb61910a727646e
- https://github.com/cakephp/cakephp/commit/3e09dae6cbdc983754fa3a8e6aae74da102a3ea1
- https://github.com/cakephp/cakephp/commit/b67b622457362b075bb37e625a82af73a0b3c9c3
- https://github.com/cakephp/cakephp