---
id: CVE-2026-77634
title: CakePHP is a rapid development framework for PHP
summary: >-
  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…
severity: high
cwe:
  - CWE-93
vendor: cakephp
product: cakephp/cakephp
affected:
  - 'cakephp/cakephp >= 4.5.0, < 4.5.12'
  - 'cakephp/cakephp >= 4.6.0, < 4.6.5'
  - 'cakephp/cakephp >= 5.0.0, < 5.1.8'
  - 'cakephp/cakephp >= 5.2.0, < 5.2.14'
  - 'cakephp/cakephp >= 5.3.0, < 5.3.7'
patched:
  - cakephp/cakephp 4.5.12
  - cakephp/cakephp 4.6.5
  - cakephp/cakephp 5.1.9
  - cakephp/cakephp 5.2.14
  - cakephp/cakephp 5.3.7
published: '2026-08-24'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:06:39.057'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77634'
references:
  - url: >-
      https://github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41
    label: security-advisories@github.com
  - url: >-
      https://github.com/cakephp/cakephp/commit/2afe42b02d8ddc5d442bca5e8bb61910a727646e
    label: security-advisories@github.com
  - url: >-
      https://github.com/cakephp/cakephp/commit/3e09dae6cbdc983754fa3a8e6aae74da102a3ea1
    label: security-advisories@github.com
  - url: >-
      https://github.com/cakephp/cakephp/commit/b67b622457362b075bb37e625a82af73a0b3c9c3
    label: security-advisories@github.com
  - url: 'https://github.com/cakephp/cakephp/security/advisories/GHSA-2qh5-382h-3jpc'
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77634'
  - url: 'https://github.com/advisories/GHSA-2qh5-382h-3jpc'
tags:
  - nvd
  - ghsa
  - composer
epss: 0.00312
epssPercentile: 0.24364
aliases:
  - GHSA-2qh5-382h-3jpc
ecosystem: composer
ingestedAt: '2026-09-08T21:11:12.321Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-77634)

Affected packages:

- `cakephp/cakephp >= 4.5.0, < 4.5.12`
- `cakephp/cakephp >= 4.6.0, < 4.6.5`
- `cakephp/cakephp >= 5.0.0, < 5.1.8`
- `cakephp/cakephp >= 5.2.0, < 5.2.14`
- `cakephp/cakephp >= 5.3.0, < 5.3.7`

Patched in:

- `cakephp/cakephp 4.5.12`
- `cakephp/cakephp 4.6.5`
- `cakephp/cakephp 5.1.9`
- `cakephp/cakephp 5.2.14`
- `cakephp/cakephp 5.3.7`

Source: https://github.com/advisories/GHSA-2qh5-382h-3jpc