CVE-2026-77634: CakePHP: SmtpTransport vulnerable to CRLF header injection

high Affects cakephp/cakephp. Feed 2026.10.29.4, updated 2026-10-29; published 2026-09-08.

CakePHP: SmtpTransport vulnerable to CRLF header injection

Package: cakephp/cakephp Composer
Affected versions: >=4.5.0 and <4.5.12 or >=4.6.0 and <4.6.5 or >=5.0.0 and <5.1.9 or >=5.2.0 and <5.2.14 or >=5.3.0 and <5.3.7
Fixed in: 4.5.12, 4.6.5, 5.1.9, 5.2.14, 5.3.7
Severity: high
Exploitation: not on CISA KEV · EPSS 1% (45.5th percentile)
Published: 2026-09-08
Source: osv.dev

References

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