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: 0.2% (5th percentile of EPSS-scored CVEs). 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: 0.2%CVSS: 4.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
4.8MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100CISA SSVC

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%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 31, 2026

Last Modified

September 8, 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
githubMentions a patch (unverified)

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 rangeFix by version rangeDependents
codeigniter4/framework4.0.0 ... v4.7.3 (78 versions)
  • every version up to 4.7.4: fixed in 4.7.4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 38× 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.

Showing the most recent 100 of 110 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 23:51 UTCEG score recompute
  5. 2026-10-06 15:18 UTCEPSS rescore
  6. 2026-10-05 19:58 UTCEG score recompute
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  15. 2026-09-30 15:03 UTCEPSS rescore
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  21. 2026-09-23 17:54 UTCEPSS rescore
  22. 2026-09-23 17:02 UTCEG score recompute
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  24. 2026-09-20 20:16 UTCEPSS rescore
  25. 2026-09-20 04:34 UTCEG score recompute
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  1. 2026-09-19 04:08 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
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  4. 2026-09-16 14:08 UTCEPSS rescore
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  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-15 07:07 UTCEG score recompute
  8. 2026-09-14 05:10 UTCEG score recompute
  9. 2026-09-13 04:44 UTCEG score recompute
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  11. 2026-09-11 14:53 UTCEPSS rescore
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  13. 2026-09-11 03:51 UTCEG score recompute
  14. 2026-09-10 03:25 UTCEG score recompute
  15. 2026-09-08 22:01 UTCEPSS rescore
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  19. 2026-09-06 13:47 UTCEPSS rescore
  20. 2026-09-05 18:48 UTCEG score recompute
  21. 2026-09-05 15:31 UTCEPSS rescore
  22. 2026-09-04 11:23 UTCEG score recompute
  23. 2026-09-04 05:07 UTCEPSS rescore
  24. 2026-09-03 09:17 UTCEG score recompute
  25. 2026-09-02 14:12 UTCEPSS rescore
  26. 2026-09-01 23:54 UTCEG score recompute
  27. 2026-09-01 13:54 UTCEPSS rescore
  28. 2026-09-01 04:40 UTCEPSS rescore
  29. 2026-08-30 22:52 UTCEG score recompute
  30. 2026-08-30 19:17 UTCEPSS rescore
  31. 2026-08-30 01:22 UTCEPSS rescore
  32. 2026-08-29 22:27 UTCEG score recompute
  33. 2026-08-28 21:42 UTCEPSS rescore
  34. 2026-08-28 02:25 UTCEG score recompute
  35. 2026-08-27 14:25 UTCEPSS rescore
  36. 2026-08-27 01:50 UTCEG score recompute
  37. 2026-08-26 14:46 UTCEPSS rescore
  38. 2026-08-26 01:22 UTCEG score recompute
  39. 2026-08-25 13:49 UTCEPSS rescore
  40. 2026-08-25 00:56 UTCEG score recompute
  41. 2026-08-24 00:30 UTCEG score recompute
  42. 2026-08-23 00:19 UTCEPSS rescore
  43. 2026-08-23 00:04 UTCEG score recompute
  44. 2026-08-21 23:49 UTCEPSS rescore
  45. 2026-08-20 23:11 UTCEG score recompute
  46. 2026-08-20 22:55 UTCEPSS rescore
  47. 2026-08-19 22:45 UTCEG score recompute
  48. 2026-08-19 17:04 UTCEPSS rescore
  49. 2026-08-18 22:18 UTCEG score recompute
  50. 2026-08-18 13:48 UTCEPSS rescore
  51. 2026-08-17 21:52 UTCEG score recompute
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  53. 2026-08-16 21:24 UTCEG score recompute
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  59. 2026-08-12 19:39 UTCEG score recompute
  60. 2026-08-12 13:51 UTCEPSS rescore
  61. 2026-08-11 19:13 UTCEG score recompute
  62. 2026-08-11 00:00 UTCEPSS rescore
  63. 2026-08-09 18:21 UTCEG score recompute
  64. 2026-08-09 13:47 UTCEPSS rescore
  65. 2026-08-08 17:55 UTCEG score recompute
  66. 2026-08-08 16:37 UTCEPSS rescore
  67. 2026-08-07 17:28 UTCEG score recompute
  68. 2026-08-06 17:02 UTCEG score recompute
  69. 2026-08-06 13:47 UTCEPSS rescore
  70. 2026-08-05 19:17 UTCEPSS rescore
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  72. 2026-08-04 16:09 UTCEG score recompute
  73. 2026-08-04 15:10 UTCEPSS rescore
  74. 2026-08-04 10:39 UTCEPSS rescore
  75. 2026-08-03 15:43 UTCEG score recompute

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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 on July 31, 2026, with the most recent update on September 8, 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 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-63220?
CVE-2026-63220 has a CVSS base score of 4.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-63220?
A fix for CVE-2026-63220 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-63220 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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