CVE-2026-63220

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 97% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

CodeIgniter 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.

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity48% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

July 31, 2026

Last Modified

July 31, 2026

Advisory Details (3)

Auto-updated Jul 31, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

CodeIgniter 4.7.4

Patch available: codeigniter4/CodeIgniter4 v4.7.4

https://github.com/codeigniter4/CodeIgniter4/releases/tag/v4.7.4
github_commit Patch Available

commit ecbf044666be (codeigniter4/CodeIgniter4)

Patch available: codeigniter4/CodeIgniter4 v4.7.4 (contains commit ecbf044666be)

https://github.com/codeigniter4/CodeIgniter4/commit/ecbf044666bed41d23f07518096d9843fe6c08b0
github Patch Available

Spoofable forwarded HTTPS headers in IncomingRequest::isSecure() · Advisory · codeigniter4/CodeIgniter4 · GitHub

https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-7wmf-pw8j-mc78

Vendor Advisories for CVE-2026-63220(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
codeigniter4/framework4.0.0 ... v4.7.3 (78 versions)4.7.4—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 23:11 UTCEG score recompute
  2. 2026-08-20 22:55 UTCEPSS rescore
  3. 2026-08-19 22:45 UTCEG score recompute
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-18 22:18 UTCEG score recompute
  6. 2026-08-18 13:48 UTCEPSS rescore
  7. 2026-08-17 21:52 UTCEG score recompute
  8. 2026-08-17 13:47 UTCEPSS rescore
  9. 2026-08-16 21:24 UTCEG score recompute
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-15 20:58 UTCEG score recompute
  12. 2026-08-15 01:30 UTCEPSS rescore
  13. 2026-08-14 20:31 UTCEG score recompute
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-12 19:39 UTCEG score recompute
  16. 2026-08-12 13:51 UTCEPSS rescore
  17. 2026-08-11 19:13 UTCEG score recompute
  18. 2026-08-11 00:00 UTCEPSS rescore
  19. 2026-08-09 18:21 UTCEG score recompute
  20. 2026-08-09 13:47 UTCEPSS rescore
  21. 2026-08-08 17:55 UTCEG score recompute
  22. 2026-08-08 16:37 UTCEPSS rescore
  23. 2026-08-07 17:28 UTCEG score recompute
  24. 2026-08-06 17:02 UTCEG score recompute
  25. 2026-08-06 13:47 UTCEPSS rescore
Show 16 more
  1. 2026-08-05 19:17 UTCEPSS rescore
  2. 2026-08-05 19:17 UTCEPSS rescore
  3. 2026-08-04 16:09 UTCEG score recompute
  4. 2026-08-04 15:10 UTCEPSS rescore
  5. 2026-08-04 10:39 UTCEPSS rescore
  6. 2026-08-03 15:43 UTCEG score recompute
  7. 2026-08-03 10:36 UTCEPSS rescore
  8. 2026-08-02 15:17 UTCEG score recompute
  9. 2026-08-02 02:27 UTCEPSS rescore
  10. 2026-08-01 14:51 UTCEG score recompute
  11. 2026-08-01 04:16 UTCEPSS rescore
  12. 2026-07-31 14:25 UTCEG score recompute
  13. 2026-07-31 14:09 UTCEG score recompute
  14. 2026-07-31 04:20 UTCEG score recompute
  15. 2026-07-31 04:06 UTCEG score recompute
  16. 2026-07-31 04:03 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-63220?
CVE-2026-63220 is a medium vulnerability published on July 31, 2026. CodeIgniter 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…
When was CVE-2026-63220 disclosed?
CVE-2026-63220 was first published in the National Vulnerability Database on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63220 actively exploited?
CVE-2026-63220 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.5% of all scored CVEs.
What is the CVSS score of CVE-2026-63220?
CVE-2026-63220 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-63220?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63220, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-63220

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