Description
CakePHP 4.5.12, 4.6.5, 5.1.8 through 5.1.10, 5.2.14 through 5.2.15, 5.3.7, and 5.4.0 through 5.4.3 contain an email header injection vulnerability because SmtpTransport and MailTransport strip only CRLF pairs from header values, an incomplete fix for CVE-2026-77634. Attackers controlling custom headers set via Message::setHeaders() or Message::addHeaders() can insert a bare CR or LF to inject headers like Bcc, redirecting or altering outgoing mail.
Published: 2026-10-30
Score: 6.3 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

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History

Fri, 30 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 30 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
Description CakePHP 4.5.12, 4.6.5, 5.1.8 through 5.1.10, 5.2.14 through 5.2.15, 5.3.7, and 5.4.0 through 5.4.3 contain an email header injection vulnerability because SmtpTransport and MailTransport strip only CRLF pairs from header values, an incomplete fix for CVE-2026-77634. Attackers controlling custom headers set via Message::setHeaders() or Message::addHeaders() can insert a bare CR or LF to inject headers like Bcc, redirecting or altering outgoing mail.
Title CakePHP through 5.4.3 Email Header Injection via Bare CR/LF in SmtpTransport and MailTransport
First Time appeared Cakephp
Cakephp cakephp
Weaknesses CWE-93
CPEs cpe:2.3:a:cakephp:cakephp:*:*:*:*:*:*:*:*
Vendors & Products Cakephp
Cakephp cakephp
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-30T15:55:41.693Z

Reserved: 2026-10-30T02:41:11.166Z

Link: CVE-2026-119417

cve-icon Vulnrichment

Updated: 2026-10-30T15:20:56.127Z

cve-icon NVD

Status : Received

Published: 2026-10-30T12:16:38.213

Modified: 2026-10-30T16:17:44.570

Link: CVE-2026-119417

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T13:30:12Z

Weaknesses