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Medium

CodeIgniter: Spoofable forwarded HTTPS headers in IncomingRequest::isSecure()

  • Disclosed: 07.08.2026
  • Updated: 11.10.2026 10:22

Impact

IncomingRequest::isSecure() trusted the X-Forwarded-Proto and Front-End-Https headers from any incoming request. In affected deployments, an attacker could spoof these headers and cause the application to incorrectly treat an HTTP request as secure.

This may impact applications that rely on isSecure(), force_https(), forceGlobalSecureRequests, or similar logic to enforce HTTPS-only access or make security-sensitive decisions.

Exploitability depends on deployment configuration. Applications are most exposed if the backend is reachable directly over HTTP, or if a reverse proxy/load balancer forwards client-supplied forwarding headers without stripping or overwriting them.

Patches

Upgrade to v4.7.4 or later.

Workarounds

Users who cannot upgrade immediately should enforce HTTP-to-HTTPS redirects outside CodeIgniter, for example with Apache .htaccess/virtual host rules, nginx server blocks, Caddy site config, or load balancer redirect rules.

Users should also ensure that reverse proxies strip or overwrite client-supplied X-Forwarded-Proto and Front-End-Https headers before forwarding requests to the application.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package codeigniter4/framework < 4.7.4 4.7.4

References

CVSS score 4.8/10
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE)
CWE-348
Platform
Composer
Package
codeigniter4/framework
Disclosed
07.08.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-7wmf-pw8j-mc78 - CC BY 4.0

Vulnerability history: codeigniter4/framework

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 (19) in the archive
Total entries
19
First → latest
01.2022 08.2026
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • Critical 6
  • High 8
  • Medium 4
  • Low 1

Disclosures per year

Severity:
  1. CodeIgniter: Uploaded file extension validation bypass in `is_image` and `mime_in` rules
    Critical · 9.8 CVE-2026-63223 < 4.7.4 4.7.4
  2. CodeIgniter: Path traversal in UploadedFile::move() when using client-provided filenames
    High · 7.5 CVE-2026-63222 < 4.7.4 4.7.4
  3. CodeIgniter: SQL injection in Query Builder deleteBatch() when used with where() conditions
    Critical · 9.4 CVE-2026-63221 >= 4.3.0, < 4.7.4 4.7.4
  4. CodeIgniter: Spoofable forwarded HTTPS headers in IncomingRequest::isSecure() this entry
    Medium · 4.8 CVE-2026-63220 < 4.7.4 4.7.4
  5. CodeIgniter4 has a validation bypass when uploading file extensions via `ext_in` rule
    Critical · 9.8 CVE-2026-48062 < 4.7.3 4.7.3
  6. CodeIgniter4's ImageMagick Handler has Command Injection Vulnerability
    Critical · 9.8 CVE-2025-54418 < 4.6.2 4.6.2
  7. CodeIgniter4 DoS Vulnerability
    High · 7.5 CVE-2024-29904 < 4.4.7 4.4.7
  8. CodeIgniter4 vulnerable to information disclosure when detailed error report is displayed in production environment
    High · 7.5 CVE-2023-46240 < 4.4.3 4.4.3
  9. Remote Code Execution Vulnerability in Validation Placeholders in CodeIgniter4
    Critical · 9.8 CVE-2023-32692 < 4.3.5 4.3.5
  10. CodeIgniter4 Potential Session Handlers Vulnerability
    High · 8.6 CVE-2022-46170 < 4.2.11 4.2.11
  11. CodeIgniter4 allows spoofing of IP address when using proxy
    High · 7.0 CVE-2022-23556 < 4.2.11 4.2.11
  12. CodeIgniter Improper Privilege Management
    High · 8.8 CVE-2020-10793 <= 4.0.0 no fix
  13. CodeIgniter HTTP Header Injection
    High · 7.5 CVE-2017-1000247 >= 3.1.3, < 3.1.4 3.1.4
  14. Remote CLI Command Execution Vulnerability in CodeIgniter4
    Critical · 9.4 CVE-2022-24711 < 4.1.9 4.1.9
  15. Deserialization of Untrusted Data in Codeigniter4
    High · 7.7 CVE-2022-21647 < 4.1.6 4.1.6

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