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High 8.2Published Aug 24, 2026

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

Updated under an hour ago ()

Does this affect you?

It affects cakephp. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
8.2 HIGH (v4.0, CNA)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
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Deferred
Record last updated
Aug 25, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
cakephp cakephp
cakephp:cakephp (from the name)
from 4.5.0, < 4.5.12; from 4.6.0, < 4.6.5; from 5.0.0, < 5.1.9; from 5.2.0, < 5.2.14; from 5.3.0, < 5.3.7
CNA record

References

  • x-refsource-confirm
  • x-refsource-misc
  • x-refsource-misc
  • x-refsource-misc
  • x-refsource-misc

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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