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High

CakePHP: SmtpTransport vulnerable to CRLF header injection

  • Disclosed: 08.09.2026
  • Updated: 11.10.2026 10:22

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.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package cakephp/cakephp >= 4.5.0, < 4.5.12, >= 4.6.0, < 4.6.5, >= 5.0.0, < 5.1.9, >= 5.2.0, < 5.2.14, >= 5.3.0, < 5.3.7 4.5.12, 4.6.5, 5.1.9, 5.2.14, 5.3.7

References

CVSS score -
CVSS vector
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
Weakness (CWE)
CWE-93
Platform
Composer
Package
cakephp/cakephp
Disclosed
08.09.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-2qh5-382h-3jpc - CC BY 4.0

Vulnerability history: cakephp/cakephp

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (22) in the archive
Total entries
22
First → latest
12.2019 09.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 8
  • Medium 11

Disclosures per year

Severity:
  1. CakePHP: Multiple methods in FunctionsBuilder vulnerable to SQL injection
    Critical CVE-2026-79752 < 4.5.12, >= 4.6.0, < 4.6.5, >= 5.0.0, < 5.1.9, >= 5.2.0, < 5.2.14, >= 5.3.0, < 5.3.7 4.5.12, 4.6.5, 5.1.9, 5.2.14, 5.3.7
  2. CakePHP: FunctionsBuilder::jsonValue() vulerable to SQL injection with PostgresDriver
    Critical CVE-2026-77635 >= 5.3.0, < 5.3.7, >= 5.2.0, < 5.2.15, >= 5.1.0, < 5.1.10 5.3.7, 5.2.15, 5.1.10
  3. CakePHP: SmtpTransport vulnerable to CRLF header injection this entry
    High CVE-2026-77634 >= 4.5.0, < 4.5.12, >= 4.6.0, < 4.6.5, >= 5.0.0, < 5.1.9, >= 5.2.0, < 5.2.14, >= 5.3.0, < 5.3.7 4.5.12, 4.6.5, 5.1.9, 5.2.14, 5.3.7
  4. CakePHP vulnerable to Denial of Service attack through XML payloads
    High ghsa-q79m-c546-2g63 >= 3.0.0, < 3.0.6, >= 2.0.0, < 2.0.99, >= 2.1.0, < 2.1.99, >= 2.2.0, < 2.2.99, >= 2.3.0, < 2.3.99, >= 2.4.0, < 2.4.99, >= 2.5.0, < 2.5.90, >= 2.6.0, < 2.6.6 3.0.6, 2.0.99, 2.1.99, 2.2.99, 2.3.99, 2.4.99, 2.5.90, 2.6.6
  5. CakePHP Database\\Query::offset() and limit() methods are vulnerable to SQL injection
    Critical · 9.8 CVE-2023-22727 >= 4.2.0, < 4.2.12, >= 4.3.0, < 4.3.11, >= 4.4.0, < 4.4.10 4.2.12, 4.3.11, 4.4.10
  6. CakePHP allows method override parameters to bypass CSRF checks
    High · 8.8 CVE-2020-35239 >= 4.0.0, < 4.0.10, >= 4.1.0, < 4.1.4 4.0.10, 4.1.4
  7. CakePHP allows remote attackers to modify internal Cake cache and execute arbitrary code
    High CVE-2010-4335 >= 1.2.8, < 1.3.6 1.3.6
  8. CakePHPallows remote attackers to read arbitrary files via XML data containing external entity references
    High · 7.5 CVE-2012-4399 >= 2.1.0-alpha, < 2.1.5, >= 2.2.0-beta, < 2.2.1 2.1.5, 2.2.1
  9. CakePHP might allow remote attackers to bypass CSRF protection mechanism via the _method parameter
    High · 8.8 CVE-2015-8379 >= 2.0.0-alpha, < 3.1.5 3.1.5
  10. CakePHP allows remote attackers to spoof their IP
    High · 7.5 CVE-2016-4793 >= 1.2.0, < 2.6.13, >= 2.7.0-rc1, < 2.7.11, >= 2.8.0-rc1, < 2.8.2, >= 3.0.0-rc1, < 3.0.17, >= 3.1.0-beta1, < 3.1.12, >= 3.2.0-rc1, < 3.2.5 2.6.13, 2.7.11, 2.8.2, 3.0.17, 3.1.12, 3.2.5
  11. Unsafe deserialization in SmtpTransport in CakePHP
    High · 7.5 CVE-2019-11458 >= 3.0.0, < 3.5.18, >= 3.6.0, < 3.6.15, >= 3.7.0, < 3.7.7 3.5.18, 3.6.15, 3.7.7

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