CakePHP: SmtpTransport vulnerable to CRLF header injection

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-77634
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-24 21:17:48 UTC
Updated2026-08-24 21:17:48 UTC
DescriptionCakePHP 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.

Risk And Classification

Primary CVSS: v4.0 8.2 HIGH from [email protected]

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-93 | CWE-93 CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary8.2HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNADECLARED8.2HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
High
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cakephp Cakephp affected >= 4.5.0, < 4.5.12 Not specified
CNA Cakephp Cakephp affected >= 4.6.0, < 4.6.5 Not specified
CNA Cakephp Cakephp affected >= 5.0.0, < 5.1.9 Not specified
CNA Cakephp Cakephp affected >= 5.2.0, < 5.2.14 Not specified
CNA Cakephp Cakephp affected >= 5.3.0, < 5.3.7 Not specified

References

ReferenceSourceLinkTags
github.com/cakephp/cakephp/security/advisories/GHSA-2qh5-382h-3jpc [email protected] github.com
github.com/cakephp/cakephp/commit/3e09dae6cbdc983754fa3a8e6aae74da102a3ea1 [email protected] github.com
github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41 [email protected] github.com
github.com/cakephp/cakephp/commit/2afe42b02d8ddc5d442bca5e8bb61910a727646e [email protected] github.com
github.com/cakephp/cakephp/commit/b67b622457362b075bb37e625a82af73a0b3c9c3 [email protected] github.com
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