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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-63220
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-31 04:17:24 UTC
Updated2026-07-31 14:16:50 UTC
DescriptionCodeIgniter is a PHP full-stack web framework. In versions prior to 4.7.4, IncomingRequest::isSecure() trusted the X-Forwarded-Proto and Front-End-Https headers from any incoming request, allowing an attacker could spoof these headers and cause the application to incorrectly treat an HTTP request as secure. This may have impacted 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. This issue has been fixed in version 4.7.4.

Risk And Classification

Primary CVSS: v3.1 4.8 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS: 0.001350000 probability, percentile 0.034270000 (date 2026-08-01)

Problem Types: CWE-348 | CWE-348 CWE-348: Use of Less Trusted Source

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
3.1CNADECLARED4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Codeigniter4 CodeIgniter4 affected < 4.7.4 Not specified

References

ReferenceSourceLinkTags
github.com/codeigniter4/CodeIgniter4/releases/tag/v4.7.4 [email protected] github.com
github.com/codeigniter4/CodeIgniter4/commit/ecbf044666bed41d23f07518096d... [email protected] github.com
github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-7wmf-pw8j-... [email protected] github.com
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